diff --git a/Dockerfile b/Dockerfile
index aefcb44bd..eca90094c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM node:8.15-alpine as node
-FROM ruby:2.6-alpine3.8
+FROM ruby:2.6-alpine3.9
 
 LABEL maintainer="https://github.com/tootsuite/mastodon" \
       description="Your self-hosted, globally interconnected microblogging community"
@@ -24,19 +24,18 @@ COPY --from=node /usr/local/lib/node_modules /usr/local/lib/node_modules
 COPY --from=node /usr/local/bin/npm /usr/local/bin/npm
 COPY --from=node /opt/yarn-* /opt/yarn
 
-RUN apk -U upgrade \
- && apk add -t build-dependencies \
+RUN apk add --no-cache -t build-dependencies \
     build-base \
     icu-dev \
     libidn-dev \
-    libressl \
+    openssl \
     libtool \
     libxml2-dev \
     libxslt-dev \
     postgresql-dev \
     protobuf-dev \
     python \
- && apk add \
+ && apk add --no-cache \
     ca-certificates \
     ffmpeg \
     file \
@@ -64,7 +63,7 @@ RUN apk -U upgrade \
  && make install \
  && libtool --finish /usr/local/lib \
  && cd /mastodon \
- && rm -rf /tmp/* /var/cache/apk/*
+ && rm -rf /tmp/*
 
 COPY Gemfile Gemfile.lock package.json yarn.lock .yarnclean /mastodon/
 COPY stack-fix.c /lib
diff --git a/Gemfile b/Gemfile
index 51595a758..fcf97b028 100644
--- a/Gemfile
+++ b/Gemfile
@@ -108,15 +108,15 @@ group :production, :test do
 end
 
 group :test do
-  gem 'capybara', '~> 3.12'
+  gem 'capybara', '~> 3.13'
   gem 'climate_control', '~> 0.2'
   gem 'faker', '~> 1.9'
-  gem 'microformats', '~> 4.0'
+  gem 'microformats', '~> 4.1'
   gem 'rails-controller-testing', '~> 1.0'
   gem 'rspec-sidekiq', '~> 3.0'
   gem 'simplecov', '~> 0.16', require: false
   gem 'webmock', '~> 3.5'
-  gem 'parallel_tests', '~> 2.27'
+  gem 'parallel_tests', '~> 2.28'
 end
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index 76bcdeda5..957ca70a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
       sshkit (~> 1.3)
     capistrano-yarn (2.0.2)
       capistrano (~> 3.0)
-    capybara (3.12.0)
+    capybara (3.13.2)
       addressable
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
@@ -268,7 +268,7 @@ GEM
       domain_name (~> 0.5)
     http-form_data (2.1.1)
     http_accept_language (2.1.1)
-    httplog (1.2.0)
+    httplog (1.2.1)
       rack (>= 1.0)
       rainbow (>= 2.0.0)
     i18n (1.5.3)
@@ -337,9 +337,9 @@ GEM
       redis (>= 3.0.5)
     memory_profiler (0.9.12)
     method_source (0.9.2)
-    microformats (4.0.7)
-      json
-      nokogiri
+    microformats (4.1.0)
+      json (~> 2.1)
+      nokogiri (~> 1.8, >= 1.8.3)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
@@ -392,7 +392,7 @@ GEM
       av (~> 0.9.0)
       paperclip (>= 2.5.2)
     parallel (1.13.0)
-    parallel_tests (2.27.1)
+    parallel_tests (2.28.0)
       parallel
     parser (2.6.0.0)
       ast (~> 2.4.0)
@@ -671,7 +671,7 @@ DEPENDENCIES
   capistrano-rails (~> 1.4)
   capistrano-rbenv (~> 2.1)
   capistrano-yarn (~> 2.0)
-  capybara (~> 3.12)
+  capybara (~> 3.13)
   charlock_holmes (~> 0.7.6)
   chewy (~> 5.0)
   cld3 (~> 3.2.3)
@@ -712,7 +712,7 @@ DEPENDENCIES
   makara (~> 0.4)
   mario-redis-lock (~> 1.2)
   memory_profiler
-  microformats (~> 4.0)
+  microformats (~> 4.1)
   mime-types (~> 3.2)
   net-ldap (~> 0.10)
   nokogiri (~> 1.10)
@@ -725,7 +725,7 @@ DEPENDENCIES
   ox (~> 2.10)
   paperclip (~> 6.0)
   paperclip-av-transcoder (~> 0.6)
-  parallel_tests (~> 2.27)
+  parallel_tests (~> 2.28)
   pg (~> 1.1)
   pghero (~> 2.2)
   pkg-config (~> 1.3)
diff --git a/app/controllers/accounts_controller.rb b/app/controllers/accounts_controller.rb
index 3a4382850..442e99089 100644
--- a/app/controllers/accounts_controller.rb
+++ b/app/controllers/accounts_controller.rb
@@ -53,11 +53,12 @@ class AccountsController < ApplicationController
   private
 
   def show_pinned_statuses?
-    [replies_requested?, media_requested?, params[:max_id].present?, params[:min_id].present?].none?
+    [replies_requested?, media_requested?, tag_requested?, params[:max_id].present?, params[:min_id].present?].none?
   end
 
   def filtered_statuses
     default_statuses.tap do |statuses|
+      statuses.merge!(hashtag_scope)    if tag_requested?
       statuses.merge!(only_media_scope) if media_requested?
       statuses.merge!(no_replies_scope) unless replies_requested?
     end
@@ -79,12 +80,15 @@ class AccountsController < ApplicationController
     Status.without_replies
   end
 
+  def hashtag_scope
+    Status.tagged_with(Tag.find_by(name: params[:tag].downcase)&.id)
+  end
+
   def set_account
     @account = Account.find_local!(params[:username])
   end
 
   def older_url
-    ::Rails.logger.info("older: max_id #{@statuses.last.id}, url #{pagination_url(max_id: @statuses.last.id)}")
     pagination_url(max_id: @statuses.last.id)
   end
 
@@ -93,7 +97,9 @@ class AccountsController < ApplicationController
   end
 
   def pagination_url(max_id: nil, min_id: nil)
-    if media_requested?
+    if tag_requested?
+      short_account_tag_url(@account, params[:tag], max_id: max_id, min_id: min_id)
+    elsif media_requested?
       short_account_media_url(@account, max_id: max_id, min_id: min_id)
     elsif replies_requested?
       short_account_with_replies_url(@account, max_id: max_id, min_id: min_id)
@@ -110,6 +116,10 @@ class AccountsController < ApplicationController
     request.path.ends_with?('/with_replies')
   end
 
+  def tag_requested?
+    request.path.ends_with?(Addressable::URI.parse("/tagged/#{params[:tag]}").normalize)
+  end
+
   def filtered_status_page(params)
     if params[:min_id].present?
       filtered_statuses.paginate_by_min_id(PAGE_SIZE, params[:min_id]).reverse
diff --git a/app/controllers/api/v1/accounts/statuses_controller.rb b/app/controllers/api/v1/accounts/statuses_controller.rb
index 6c2a5c141..6fdc827cb 100644
--- a/app/controllers/api/v1/accounts/statuses_controller.rb
+++ b/app/controllers/api/v1/accounts/statuses_controller.rb
@@ -33,6 +33,7 @@ class Api::V1::Accounts::StatusesController < Api::BaseController
     statuses.merge!(only_media_scope) if truthy_param?(:only_media)
     statuses.merge!(no_replies_scope) if truthy_param?(:exclude_replies)
     statuses.merge!(no_reblogs_scope) if truthy_param?(:exclude_reblogs)
+    statuses.merge!(hashtag_scope)    if params[:tagged].present?
 
     statuses
   end
@@ -67,6 +68,10 @@ class Api::V1::Accounts::StatusesController < Api::BaseController
     Status.without_reblogs
   end
 
+  def hashtag_scope
+    Status.tagged_with(Tag.find_by(name: params[:tagged])&.id)
+  end
+
   def pagination_params(core_params)
     params.slice(:limit, :only_media, :exclude_replies).permit(:limit, :only_media, :exclude_replies).merge(core_params)
   end
diff --git a/app/controllers/oauth/authorized_applications_controller.rb b/app/controllers/oauth/authorized_applications_controller.rb
index 1e420b3e7..4e45445df 100644
--- a/app/controllers/oauth/authorized_applications_controller.rb
+++ b/app/controllers/oauth/authorized_applications_controller.rb
@@ -6,6 +6,7 @@ class Oauth::AuthorizedApplicationsController < Doorkeeper::AuthorizedApplicatio
   before_action :store_current_location
   before_action :authenticate_resource_owner!
   before_action :set_pack
+  before_action :set_body_classes
 
   include Localized
 
@@ -16,6 +17,10 @@ class Oauth::AuthorizedApplicationsController < Doorkeeper::AuthorizedApplicatio
 
   private
 
+  def set_body_classes
+    @body_classes = 'admin'
+  end
+
   def store_current_location
     store_location_for(:user, request.url)
   end
diff --git a/app/controllers/settings/featured_tags_controller.rb b/app/controllers/settings/featured_tags_controller.rb
new file mode 100644
index 000000000..3a3241425
--- /dev/null
+++ b/app/controllers/settings/featured_tags_controller.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+class Settings::FeaturedTagsController < Settings::BaseController
+  layout 'admin'
+
+  before_action :authenticate_user!
+  before_action :set_featured_tags, only: :index
+  before_action :set_featured_tag, except: [:index, :create]
+  before_action :set_most_used_tags, only: :index
+
+  def index
+    @featured_tag = FeaturedTag.new
+  end
+
+  def create
+    @featured_tag = current_account.featured_tags.new(featured_tag_params)
+    @featured_tag.reset_data
+
+    if @featured_tag.save
+      redirect_to settings_featured_tags_path
+    else
+      set_featured_tags
+      set_most_used_tags
+
+      render :index
+    end
+  end
+
+  def destroy
+    @featured_tag.destroy!
+    redirect_to settings_featured_tags_path
+  end
+
+  private
+
+  def set_featured_tag
+    @featured_tag = current_account.featured_tags.find(params[:id])
+  end
+
+  def set_featured_tags
+    @featured_tags = current_account.featured_tags.order(statuses_count: :desc).reject(&:new_record?)
+  end
+
+  def set_most_used_tags
+    @most_used_tags = Tag.most_used(current_account).where.not(id: @featured_tags.map(&:id)).limit(10)
+  end
+
+  def featured_tag_params
+    params.require(:featured_tag).permit(:name)
+  end
+end
diff --git a/app/controllers/settings/profiles_controller.rb b/app/controllers/settings/profiles_controller.rb
index 1a0b73d16..76d599f08 100644
--- a/app/controllers/settings/profiles_controller.rb
+++ b/app/controllers/settings/profiles_controller.rb
@@ -29,6 +29,6 @@ class Settings::ProfilesController < Settings::BaseController
   end
 
   def set_account
-    @account = current_user.account
+    @account = current_account
   end
 end
diff --git a/app/controllers/settings/sessions_controller.rb b/app/controllers/settings/sessions_controller.rb
index 780ea64b4..d74db6000 100644
--- a/app/controllers/settings/sessions_controller.rb
+++ b/app/controllers/settings/sessions_controller.rb
@@ -2,6 +2,7 @@
 
 #  Intentionally does not inherit from BaseController
 class Settings::SessionsController < ApplicationController
+  before_action :authenticate_user!
   before_action :set_session, only: :destroy
 
   def destroy
diff --git a/app/javascript/mastodon/actions/alerts.js b/app/javascript/mastodon/actions/alerts.js
index 3f5d7ef46..50cd48a9e 100644
--- a/app/javascript/mastodon/actions/alerts.js
+++ b/app/javascript/mastodon/actions/alerts.js
@@ -22,7 +22,7 @@ export function clearAlert() {
   };
 };
 
-export function showAlert(title, message) {
+export function showAlert(title = messages.unexpectedTitle, message = messages.unexpectedMessage) {
   return {
     type: ALERT_SHOW,
     title,
@@ -44,6 +44,6 @@ export function showAlertForError(error) {
     return showAlert(title, message);
   } else {
     console.error(error);
-    return showAlert(messages.unexpectedTitle, messages.unexpectedMessage);
+    return showAlert();
   }
 }
diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
index a4352faab..0be2a5cd4 100644
--- a/app/javascript/mastodon/actions/compose.js
+++ b/app/javascript/mastodon/actions/compose.js
@@ -8,6 +8,8 @@ import resizeImage from '../utils/resize_image';
 import { importFetchedAccounts } from './importer';
 import { updateTimeline } from './timelines';
 import { showAlertForError } from './alerts';
+import { showAlert } from './alerts';
+import { defineMessages } from 'react-intl';
 
 let cancelFetchComposeSuggestionsAccounts;
 
@@ -49,6 +51,10 @@ export const COMPOSE_UPLOAD_CHANGE_REQUEST     = 'COMPOSE_UPLOAD_UPDATE_REQUEST'
 export const COMPOSE_UPLOAD_CHANGE_SUCCESS     = 'COMPOSE_UPLOAD_UPDATE_SUCCESS';
 export const COMPOSE_UPLOAD_CHANGE_FAIL        = 'COMPOSE_UPLOAD_UPDATE_FAIL';
 
+const messages = defineMessages({
+  uploadErrorLimit: { id: 'upload_error.limit', defaultMessage: 'File upload limit exceeded.' },
+});
+
 export function changeCompose(text) {
   return {
     type: COMPOSE_CHANGE,
@@ -184,20 +190,32 @@ export function submitComposeFail(error) {
 
 export function uploadCompose(files) {
   return function (dispatch, getState) {
-    if (getState().getIn(['compose', 'media_attachments']).size > 3) {
+    const uploadLimit = 4;
+    const media  = getState().getIn(['compose', 'media_attachments']);
+    const total = Array.from(files).reduce((a, v) => a + v.size, 0);
+    const progress = new Array(files.length).fill(0);
+
+    if (files.length + media.size > uploadLimit) {
+      dispatch(showAlert(undefined, messages.uploadErrorLimit));
       return;
     }
-
     dispatch(uploadComposeRequest());
 
-    resizeImage(files[0]).then(file => {
-      const data = new FormData();
-      data.append('file', file);
+    for (const [i, f] of Array.from(files).entries()) {
+      if (media.size + i > 3) break;
 
-      return api(getState).post('/api/v1/media', data, {
-        onUploadProgress: ({ loaded, total }) => dispatch(uploadComposeProgress(loaded, total)),
-      }).then(({ data }) => dispatch(uploadComposeSuccess(data)));
-    }).catch(error => dispatch(uploadComposeFail(error)));
+      resizeImage(f).then(file => {
+        const data = new FormData();
+        data.append('file', file);
+
+        return api(getState).post('/api/v1/media', data, {
+          onUploadProgress: function({ loaded }){
+            progress[i] = loaded;
+            dispatch(uploadComposeProgress(progress.reduce((a, v) => a + v, 0), total));
+          },
+        }).then(({ data }) => dispatch(uploadComposeSuccess(data)));
+      }).catch(error => dispatch(uploadComposeFail(error)));
+    };
   };
 };
 
diff --git a/app/javascript/mastodon/components/intersection_observer_article.js b/app/javascript/mastodon/components/intersection_observer_article.js
index de2203a4b..e453730ba 100644
--- a/app/javascript/mastodon/components/intersection_observer_article.js
+++ b/app/javascript/mastodon/components/intersection_observer_article.js
@@ -65,7 +65,7 @@ export default class IntersectionObserverArticle extends React.Component {
   }
 
   updateStateAfterIntersection = (prevState) => {
-    if (prevState.isIntersecting && !this.entry.isIntersecting) {
+    if (prevState.isIntersecting !== false && !this.entry.isIntersecting) {
       scheduleIdleTask(this.hideIfNotIntersecting);
     }
     return {
diff --git a/app/javascript/mastodon/containers/compose_container.js b/app/javascript/mastodon/containers/compose_container.js
index 5ee1d2f14..7bc7bbaa4 100644
--- a/app/javascript/mastodon/containers/compose_container.js
+++ b/app/javascript/mastodon/containers/compose_container.js
@@ -7,6 +7,7 @@ import { IntlProvider, addLocaleData } from 'react-intl';
 import { getLocale } from '../locales';
 import Compose from '../features/standalone/compose';
 import initialState from '../initial_state';
+import { fetchCustomEmojis } from '../actions/custom_emojis';
 
 const { localeData, messages } = getLocale();
 addLocaleData(localeData);
@@ -17,6 +18,8 @@ if (initialState) {
   store.dispatch(hydrateStore(initialState));
 }
 
+store.dispatch(fetchCustomEmojis());
+
 export default class TimelineContainer extends React.PureComponent {
 
   static propTypes = {
diff --git a/app/javascript/mastodon/features/compose/components/upload_button.js b/app/javascript/mastodon/features/compose/components/upload_button.js
index b6fe770ea..db55ad70b 100644
--- a/app/javascript/mastodon/features/compose/components/upload_button.js
+++ b/app/javascript/mastodon/features/compose/components/upload_button.js
@@ -63,7 +63,7 @@ class UploadButton extends ImmutablePureComponent {
             key={resetFileKey}
             ref={this.setRef}
             type='file'
-            multiple={false}
+            multiple
             accept={acceptContentTypes.toArray().join(',')}
             onChange={this.handleChange}
             disabled={disabled}
diff --git a/app/javascript/mastodon/features/getting_started/index.js b/app/javascript/mastodon/features/getting_started/index.js
index e277a73c7..e1f84de27 100644
--- a/app/javascript/mastodon/features/getting_started/index.js
+++ b/app/javascript/mastodon/features/getting_started/index.js
@@ -160,7 +160,7 @@ class GettingStarted extends ImmutablePureComponent {
               {invitesEnabled && <li><a href='/invites' target='_blank'><FormattedMessage id='getting_started.invite' defaultMessage='Invite people' /></a> · </li>}
               {multiColumn && <li><Link to='/keyboard-shortcuts'><FormattedMessage id='navigation_bar.keyboard_shortcuts' defaultMessage='Hotkeys' /></Link> · </li>}
               <li><a href='/auth/edit'><FormattedMessage id='getting_started.security' defaultMessage='Security' /></a> · </li>
-              <li><a href='/about/more' target='_blank'><FormattedMessage id='navigation_bar.info' defaultMessage='About this instance' /></a> · </li>
+              <li><a href='/about/more' target='_blank'><FormattedMessage id='navigation_bar.info' defaultMessage='About this server' /></a> · </li>
               <li><a href='https://joinmastodon.org/apps' target='_blank'><FormattedMessage id='navigation_bar.apps' defaultMessage='Mobile apps' /></a> · </li>
               <li><a href='/terms' target='_blank'><FormattedMessage id='getting_started.terms' defaultMessage='Terms of service' /></a> · </li>
               <li><a href='/settings/applications' target='_blank'><FormattedMessage id='getting_started.developers' defaultMessage='Developers' /></a> · </li>
diff --git a/app/javascript/mastodon/features/introduction/index.js b/app/javascript/mastodon/features/introduction/index.js
index e712b2f7d..754477bb9 100644
--- a/app/javascript/mastodon/features/introduction/index.js
+++ b/app/javascript/mastodon/features/introduction/index.js
@@ -89,7 +89,7 @@ const FrameInteractions = ({ onNext }) => (
     </div>
 
     <div className='introduction__action'>
-      <button className='button' onClick={onNext}><FormattedMessage id='introduction.interactions.action' defaultMessage='Finish tutorial!' /></button>
+      <button className='button' onClick={onNext}><FormattedMessage id='introduction.interactions.action' defaultMessage='Finish toot-orial!' /></button>
     </div>
   </div>
 );
diff --git a/app/javascript/mastodon/features/public_timeline/index.js b/app/javascript/mastodon/features/public_timeline/index.js
index d640033eb..2b7d9c56f 100644
--- a/app/javascript/mastodon/features/public_timeline/index.js
+++ b/app/javascript/mastodon/features/public_timeline/index.js
@@ -124,7 +124,7 @@ class PublicTimeline extends React.PureComponent {
           onLoadMore={this.handleLoadMore}
           trackScroll={!pinned}
           scrollKey={`public_timeline-${columnId}`}
-          emptyMessage={<FormattedMessage id='empty_column.public' defaultMessage='There is nothing here! Write something publicly, or manually follow users from other instances to fill it up' />}
+          emptyMessage={<FormattedMessage id='empty_column.public' defaultMessage='There is nothing here! Write something publicly, or manually follow users from other servers to fill it up' />}
           shouldUpdateScroll={shouldUpdateScroll}
         />
       </Column>
diff --git a/app/javascript/mastodon/features/ui/components/report_modal.js b/app/javascript/mastodon/features/ui/components/report_modal.js
index bc6b18664..2e41f784d 100644
--- a/app/javascript/mastodon/features/ui/components/report_modal.js
+++ b/app/javascript/mastodon/features/ui/components/report_modal.js
@@ -97,7 +97,7 @@ class ReportModal extends ImmutablePureComponent {
 
         <div className='report-modal__container'>
           <div className='report-modal__comment'>
-            <p><FormattedMessage id='report.hint' defaultMessage='The report will be sent to your instance moderators. You can provide an explanation of why you are reporting this account below:' /></p>
+            <p><FormattedMessage id='report.hint' defaultMessage='The report will be sent to your server moderators. You can provide an explanation of why you are reporting this account below:' /></p>
 
             <textarea
               className='setting-text light'
diff --git a/app/javascript/mastodon/features/ui/index.js b/app/javascript/mastodon/features/ui/index.js
index f01c2bf24..93e45678f 100644
--- a/app/javascript/mastodon/features/ui/index.js
+++ b/app/javascript/mastodon/features/ui/index.js
@@ -263,7 +263,7 @@ class UI extends React.PureComponent {
     this.setState({ draggingOver: false });
     this.dragTargets = [];
 
-    if (e.dataTransfer && e.dataTransfer.files.length === 1) {
+    if (e.dataTransfer && e.dataTransfer.files.length >= 1) {
       this.props.dispatch(uploadCompose(e.dataTransfer.files));
     }
   }
diff --git a/app/javascript/mastodon/locales/defaultMessages.json b/app/javascript/mastodon/locales/defaultMessages.json
index 60f481076..eb3a7bbde 100644
--- a/app/javascript/mastodon/locales/defaultMessages.json
+++ b/app/javascript/mastodon/locales/defaultMessages.json
@@ -12,6 +12,15 @@
     ],
     "path": "app/javascript/mastodon/actions/alerts.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "File upload limit exceeded.",
+        "id": "upload_error.limit"
+      }
+    ],
+    "path": "app/javascript/mastodon/actions/compose.json"
+  },
   {
     "descriptors": [
       {
@@ -1275,7 +1284,7 @@
         "id": "getting_started.security"
       },
       {
-        "defaultMessage": "About this instance",
+        "defaultMessage": "About this server",
         "id": "navigation_bar.info"
       },
       {
@@ -1448,7 +1457,7 @@
         "id": "introduction.interactions.favourite.text"
       },
       {
-        "defaultMessage": "Finish tutorial!",
+        "defaultMessage": "Finish toot-orial!",
         "id": "introduction.interactions.action"
       }
     ],
@@ -1828,7 +1837,7 @@
         "id": "column.public"
       },
       {
-        "defaultMessage": "There is nothing here! Write something publicly, or manually follow users from other instances to fill it up",
+        "defaultMessage": "There is nothing here! Write something publicly, or manually follow users from other servers to fill it up",
         "id": "empty_column.public"
       }
     ],
@@ -2188,7 +2197,7 @@
         "id": "report.target"
       },
       {
-        "defaultMessage": "The report will be sent to your instance moderators. You can provide an explanation of why you are reporting this account below:",
+        "defaultMessage": "The report will be sent to your server moderators. You can provide an explanation of why you are reporting this account below:",
         "id": "report.hint"
       },
       {
@@ -2298,4 +2307,4 @@
     ],
     "path": "app/javascript/mastodon/features/video/index.json"
   }
-]
\ No newline at end of file
+]
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index 3bb157aeb..b079f256d 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -132,7 +132,7 @@
   "empty_column.lists": "You don't have any lists yet. When you create one, it will show up here.",
   "empty_column.mutes": "You haven't muted any users yet.",
   "empty_column.notifications": "You don't have any notifications yet. Interact with others to start the conversation.",
-  "empty_column.public": "There is nothing here! Write something publicly, or manually follow users from other instances to fill it up",
+  "empty_column.public": "There is nothing here! Write something publicly, or manually follow users from other servers to fill it up",
   "follow_request.authorize": "Authorize",
   "follow_request.reject": "Reject",
   "getting_started.developers": "Developers",
@@ -228,7 +228,7 @@
   "navigation_bar.favourites": "Favourites",
   "navigation_bar.filters": "Muted words",
   "navigation_bar.follow_requests": "Follow requests",
-  "navigation_bar.info": "About this instance",
+  "navigation_bar.info": "About this server",
   "navigation_bar.keyboard_shortcuts": "Hotkeys",
   "navigation_bar.lists": "Lists",
   "navigation_bar.misc": "Misc",
@@ -281,7 +281,7 @@
   "reply_indicator.cancel": "Cancel",
   "report.forward": "Forward to {target}",
   "report.forward_hint": "The account is from another server. Send an anonymized copy of the report there as well?",
-  "report.hint": "The report will be sent to your instance moderators. You can provide an explanation of why you are reporting this account below:",
+  "report.hint": "The report will be sent to your server moderators. You can provide an explanation of why you are reporting this account below:",
   "report.placeholder": "Additional comments",
   "report.submit": "Submit",
   "report.target": "Reporting {target}",
@@ -347,6 +347,7 @@
   "ui.beforeunload": "Your draft will be lost if you leave Mastodon.",
   "upload_area.title": "Drag & drop to upload",
   "upload_button.label": "Add media (JPEG, PNG, GIF, WebM, MP4, MOV)",
+  "upload_error.limit": "File upload limit exceeded.",
   "upload_form.description": "Describe for the visually impaired",
   "upload_form.focus": "Change preview",
   "upload_form.undo": "Delete",
diff --git a/app/javascript/mastodon/locales/ja.json b/app/javascript/mastodon/locales/ja.json
index e0cba7764..4bcc11d70 100644
--- a/app/javascript/mastodon/locales/ja.json
+++ b/app/javascript/mastodon/locales/ja.json
@@ -132,7 +132,7 @@
   "empty_column.lists": "まだリストがありません。リストを作るとここに表示されます。",
   "empty_column.mutes": "まだ誰もミュートしていません。",
   "empty_column.notifications": "まだ通知がありません。他の人とふれ合って会話を始めましょう。",
-  "empty_column.public": "ここにはまだ何もありません！ 公開で何かを投稿したり、他のインスタンスのユーザーをフォローしたりしていっぱいにしましょう",
+  "empty_column.public": "ここにはまだ何もありません！ 公開で何かを投稿したり、他のサーバーのユーザーをフォローしたりしていっぱいにしましょう",
   "follow_request.authorize": "許可",
   "follow_request.reject": "拒否",
   "getting_started.developers": "開発",
@@ -228,7 +228,7 @@
   "navigation_bar.favourites": "お気に入り",
   "navigation_bar.filters": "フィルター設定",
   "navigation_bar.follow_requests": "フォローリクエスト",
-  "navigation_bar.info": "このインスタンスについて",
+  "navigation_bar.info": "このサーバーについて",
   "navigation_bar.keyboard_shortcuts": "ホットキー",
   "navigation_bar.lists": "リスト",
   "navigation_bar.logout": "ログアウト",
@@ -280,8 +280,8 @@
   "relative_time.seconds": "{number}秒前",
   "reply_indicator.cancel": "キャンセル",
   "report.forward": "{target} に転送する",
-  "report.forward_hint": "このアカウントは別のインスタンスに所属しています。通報内容を匿名で転送しますか？",
-  "report.hint": "通報内容はあなたのインスタンスのモデレーターへ送信されます。通報理由を入力してください。:",
+  "report.forward_hint": "このアカウントは別のサーバーに所属しています。通報内容を匿名で転送しますか？",
+  "report.hint": "通報内容はあなたのサーバーのモデレーターへ送信されます。通報理由を入力してください。:",
   "report.placeholder": "追加コメント",
   "report.submit": "通報する",
   "report.target": "{target}さんを通報する",
@@ -347,6 +347,7 @@
   "ui.beforeunload": "Mastodonから離れると送信前の投稿は失われます。",
   "upload_area.title": "ドラッグ＆ドロップでアップロード",
   "upload_button.label": "メディアを追加 (JPEG, PNG, GIF, WebM, MP4, MOV)",
+  "upload_error.limit": "アップロードできる上限を超えています。",
   "upload_form.description": "視覚障害者のための説明",
   "upload_form.focus": "焦点",
   "upload_form.undo": "削除",
diff --git a/app/javascript/mastodon/locales/pl.json b/app/javascript/mastodon/locales/pl.json
index 9f78c430f..e9e0c768d 100644
--- a/app/javascript/mastodon/locales/pl.json
+++ b/app/javascript/mastodon/locales/pl.json
@@ -347,6 +347,7 @@
   "ui.beforeunload": "Utracisz tworzony wpis, jeżeli opuścisz Mastodona.",
   "upload_area.title": "Przeciągnij i upuść aby wysłać",
   "upload_button.label": "Dodaj zawartość multimedialną (JPEG, PNG, GIF, WebM, MP4, MOV)",
+  "upload_error.limit": "Przekroczono limit plików do wysłania.",
   "upload_form.description": "Wprowadź opis dla niewidomych i niedowidzących",
   "upload_form.focus": "Dopasuj podgląd",
   "upload_form.undo": "Usuń",
diff --git a/app/javascript/mastodon/utils/resize_image.js b/app/javascript/mastodon/utils/resize_image.js
index d1608094f..bbdbc865e 100644
--- a/app/javascript/mastodon/utils/resize_image.js
+++ b/app/javascript/mastodon/utils/resize_image.js
@@ -31,7 +31,7 @@ const loadImage = inputFile => new Promise((resolve, reject) => {
 });
 
 const getOrientation = (img, type = 'image/png') => new Promise(resolve => {
-  if (type !== 'image/jpeg') {
+  if (!['image/jpeg', 'image/webp'].includes(type)) {
     resolve(1);
     return;
   }
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
index 63a5c61b8..f4f458cf4 100644
--- a/app/javascript/styles/mastodon/accounts.scss
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -288,3 +288,7 @@
     border-bottom: 0;
   }
 }
+
+.directory__tag .trends__item__current {
+  width: auto;
+}
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index 4e969601b..4dbbaa1e8 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -153,10 +153,15 @@ $content-width: 840px;
       font-weight: 500;
     }
 
-    .directory__tag a {
+    .directory__tag > a,
+    .directory__tag > div {
       box-shadow: none;
     }
 
+    .directory__tag .table-action-link .fa {
+      color: inherit;
+    }
+
     .directory__tag h4 {
       font-size: 18px;
       font-weight: 700;
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 8c1115e76..e29abf4f3 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -638,7 +638,6 @@
   font-weight: 400;
   overflow: hidden;
   text-overflow: ellipsis;
-  white-space: pre-wrap;
   padding-top: 2px;
   color: $primary-text-color;
 
@@ -662,6 +661,7 @@
 
   p {
     margin-bottom: 20px;
+    white-space: pre-wrap;
 
     &:last-child {
       margin-bottom: 0;
diff --git a/app/javascript/styles/mastodon/widgets.scss b/app/javascript/styles/mastodon/widgets.scss
index c97337e4e..1eaf30c5b 100644
--- a/app/javascript/styles/mastodon/widgets.scss
+++ b/app/javascript/styles/mastodon/widgets.scss
@@ -269,7 +269,8 @@
     box-sizing: border-box;
     margin-bottom: 10px;
 
-    a {
+    & > a,
+    & > div {
       display: flex;
       align-items: center;
       justify-content: space-between;
@@ -279,7 +280,9 @@
       text-decoration: none;
       color: inherit;
       box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+    }
 
+    & > a {
       &:hover,
       &:active,
       &:focus {
@@ -287,7 +290,7 @@
       }
     }
 
-    &.active a {
+    &.active > a {
       background: $ui-highlight-color;
       cursor: default;
     }
diff --git a/app/lib/activity_tracker.rb b/app/lib/activity_tracker.rb
index 5b4972674..ae3c11b6a 100644
--- a/app/lib/activity_tracker.rb
+++ b/app/lib/activity_tracker.rb
@@ -4,6 +4,8 @@ class ActivityTracker
   EXPIRE_AFTER = 90.days.seconds
 
   class << self
+    include Redisable
+
     def increment(prefix)
       key = [prefix, current_week].join(':')
 
@@ -20,10 +22,6 @@ class ActivityTracker
 
     private
 
-    def redis
-      Redis.current
-    end
-
     def current_week
       Time.zone.today.cweek
     end
diff --git a/app/lib/activitypub/activity.rb b/app/lib/activitypub/activity.rb
index 87318fb1c..919678618 100644
--- a/app/lib/activitypub/activity.rb
+++ b/app/lib/activitypub/activity.rb
@@ -2,6 +2,7 @@
 
 class ActivityPub::Activity
   include JsonLdHelper
+  include Redisable
 
   def initialize(json, account, **options)
     @json    = json
@@ -70,10 +71,6 @@ class ActivityPub::Activity
     @object_uri ||= value_or_id(@object)
   end
 
-  def redis
-    Redis.current
-  end
-
   def distribute(status)
     crawl_links(status)
 
diff --git a/app/lib/feed_manager.rb b/app/lib/feed_manager.rb
index a1b186f1c..4bc75dae8 100644
--- a/app/lib/feed_manager.rb
+++ b/app/lib/feed_manager.rb
@@ -4,6 +4,7 @@ require 'singleton'
 
 class FeedManager
   include Singleton
+  include Redisable
 
   MAX_ITEMS = 400
 
@@ -35,7 +36,7 @@ class FeedManager
 
   def unpush_from_home(account, status)
     return false unless remove_from_feed(:home, account.id, status)
-    Redis.current.publish("timeline:#{account.id}", Oj.dump(event: :delete, payload: status.id.to_s))
+    redis.publish("timeline:#{account.id}", Oj.dump(event: :delete, payload: status.id.to_s))
     true
   end
 
@@ -54,7 +55,7 @@ class FeedManager
 
   def unpush_from_list(list, status)
     return false unless remove_from_feed(:list, list.id, status)
-    Redis.current.publish("timeline:list:#{list.id}", Oj.dump(event: :delete, payload: status.id.to_s))
+    redis.publish("timeline:list:#{list.id}", Oj.dump(event: :delete, payload: status.id.to_s))
     true
   end
 
@@ -143,10 +144,6 @@ class FeedManager
 
   private
 
-  def redis
-    Redis.current
-  end
-
   def push_update_required?(timeline_id)
     redis.exists("subscribed:#{timeline_id}")
   end
diff --git a/app/lib/formatter.rb b/app/lib/formatter.rb
index 05fd9eeb1..0653214f5 100644
--- a/app/lib/formatter.rb
+++ b/app/lib/formatter.rb
@@ -99,7 +99,7 @@ class Formatter
   end
 
   def encode_and_link_urls(html, accounts = nil, options = {})
-    entities = Extractor.extract_entities_with_indices(html, extract_url_without_protocol: false)
+    entities = utf8_friendly_extractor(html, extract_url_without_protocol: false)
 
     if accounts.is_a?(Hash)
       options  = accounts
@@ -199,6 +199,53 @@ class Formatter
     result.flatten.join
   end
 
+  UNICODE_ESCAPE_BLACKLIST_RE = /\p{Z}|\p{P}/
+
+  def utf8_friendly_extractor(text, options = {})
+    old_to_new_index = [0]
+
+    escaped = text.chars.map do |c|
+      output = begin
+        if c.ord.to_s(16).length > 2 && UNICODE_ESCAPE_BLACKLIST_RE.match(c).nil?
+          CGI.escape(c)
+        else
+          c
+        end
+      end
+
+      old_to_new_index << old_to_new_index.last + output.length
+
+      output
+    end.join
+
+    # Note: I couldn't obtain list_slug with @user/list-name format
+    # for mention so this requires additional check
+    special = Extractor.extract_urls_with_indices(escaped, options).map do |extract|
+      # exactly one of :url, :hashtag, :screen_name, :cashtag keys is present
+      key = (extract.keys & [:url, :hashtag, :screen_name, :cashtag]).first
+
+      new_indices = [
+        old_to_new_index.find_index(extract[:indices].first),
+        old_to_new_index.find_index(extract[:indices].last),
+      ]
+
+      has_prefix_char = [:hashtag, :screen_name, :cashtag].include?(key)
+      value_indices = [
+        new_indices.first + (has_prefix_char ? 1 : 0), # account for #, @ or $
+        new_indices.last - 1,
+      ]
+
+      next extract.merge(
+        :indices => new_indices,
+        key => text[value_indices.first..value_indices.last]
+      )
+    end
+
+    standard = Extractor.extract_entities_with_indices(text, options)
+
+    Extractor.remove_overlapping_entities(special + standard)
+  end
+
   def link_to_url(entity, options = {})
     url        = Addressable::URI.parse(entity[:url])
     html_attrs = { target: '_blank', rel: 'nofollow noopener' }
diff --git a/app/lib/ostatus/activity/base.rb b/app/lib/ostatus/activity/base.rb
index c5933f3ad..db70f1998 100644
--- a/app/lib/ostatus/activity/base.rb
+++ b/app/lib/ostatus/activity/base.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class OStatus::Activity::Base
+  include Redisable
+
   def initialize(xml, account = nil, **options)
     @xml     = xml
     @account = account
@@ -66,8 +68,4 @@ class OStatus::Activity::Base
       Status.find_by(uri: uri)
     end
   end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/app/lib/potential_friendship_tracker.rb b/app/lib/potential_friendship_tracker.rb
index 017a9748d..188aa4a27 100644
--- a/app/lib/potential_friendship_tracker.rb
+++ b/app/lib/potential_friendship_tracker.rb
@@ -11,6 +11,8 @@ class PotentialFriendshipTracker
   }.freeze
 
   class << self
+    include Redisable
+
     def record(account_id, target_account_id, action)
       return if account_id == target_account_id
 
@@ -31,11 +33,5 @@ class PotentialFriendshipTracker
       return [] if account_ids.empty?
       Account.searchable.where(id: account_ids)
     end
-
-    private
-
-    def redis
-      Redis.current
-    end
   end
 end
diff --git a/app/models/account_domain_block.rb b/app/models/account_domain_block.rb
index e352000c3..7c0d60379 100644
--- a/app/models/account_domain_block.rb
+++ b/app/models/account_domain_block.rb
@@ -12,6 +12,7 @@
 
 class AccountDomainBlock < ApplicationRecord
   include Paginable
+  include DomainNormalizable
 
   belongs_to :account
   validates :domain, presence: true, uniqueness: { scope: :account_id }
diff --git a/app/models/concerns/account_associations.rb b/app/models/concerns/account_associations.rb
index 4e730451a..3ab8a0daa 100644
--- a/app/models/concerns/account_associations.rb
+++ b/app/models/concerns/account_associations.rb
@@ -56,5 +56,6 @@ module AccountAssociations
 
     # Hashtags
     has_and_belongs_to_many :tags
+    has_many :featured_tags, -> { includes(:tag) }, dependent: :destroy, inverse_of: :account
   end
 end
diff --git a/app/models/concerns/account_avatar.rb b/app/models/concerns/account_avatar.rb
index 2d5ebfca3..5fff3ef5d 100644
--- a/app/models/concerns/account_avatar.rb
+++ b/app/models/concerns/account_avatar.rb
@@ -3,7 +3,7 @@
 module AccountAvatar
   extend ActiveSupport::Concern
 
-  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
   LIMIT = 2.megabytes
 
   class_methods do
diff --git a/app/models/concerns/account_header.rb b/app/models/concerns/account_header.rb
index 067e166eb..a748fdff7 100644
--- a/app/models/concerns/account_header.rb
+++ b/app/models/concerns/account_header.rb
@@ -3,7 +3,7 @@
 module AccountHeader
   extend ActiveSupport::Concern
 
-  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
   LIMIT = 2.megabytes
   MAX_PIXELS = 750_000 # 1500x500px
 
diff --git a/app/models/concerns/domain_normalizable.rb b/app/models/concerns/domain_normalizable.rb
index dff3e5414..fb84058fc 100644
--- a/app/models/concerns/domain_normalizable.rb
+++ b/app/models/concerns/domain_normalizable.rb
@@ -10,6 +10,6 @@ module DomainNormalizable
   private
 
   def normalize_domain
-    self.domain = TagManager.instance.normalize_domain(domain)
+    self.domain = TagManager.instance.normalize_domain(domain&.strip)
   end
 end
diff --git a/app/models/concerns/redisable.rb b/app/models/concerns/redisable.rb
new file mode 100644
index 000000000..c6cf97359
--- /dev/null
+++ b/app/models/concerns/redisable.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Redisable
+  extend ActiveSupport::Concern
+
+  private
+
+  def redis
+    Redis.current
+  end
+end
diff --git a/app/models/export.rb b/app/models/export.rb
index a2520e9c2..fc4bb6964 100644
--- a/app/models/export.rb
+++ b/app/models/export.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'csv'
 
 class Export
diff --git a/app/models/featured_tag.rb b/app/models/featured_tag.rb
new file mode 100644
index 000000000..b5a10ad2d
--- /dev/null
+++ b/app/models/featured_tag.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: featured_tags
+#
+#  id             :bigint(8)        not null, primary key
+#  account_id     :bigint(8)
+#  tag_id         :bigint(8)
+#  statuses_count :bigint(8)        default(0), not null
+#  last_status_at :datetime
+#  created_at     :datetime         not null
+#  updated_at     :datetime         not null
+#
+
+class FeaturedTag < ApplicationRecord
+  belongs_to :account, inverse_of: :featured_tags, required: true
+  belongs_to :tag, inverse_of: :featured_tags, required: true
+
+  delegate :name, to: :tag, allow_nil: true
+
+  validates :name, presence: true
+  validate :validate_featured_tags_limit, on: :create
+
+  def name=(str)
+    self.tag = Tag.find_or_initialize_by(name: str.delete('#').mb_chars.downcase.to_s)
+  end
+
+  def increment(timestamp)
+    update(statuses_count: statuses_count + 1, last_status_at: timestamp)
+  end
+
+  def decrement(deleted_status_id)
+    update(statuses_count: [0, statuses_count - 1].max, last_status_at: account.statuses.where(visibility: %i(public unlisted)).tagged_with(tag).where.not(id: deleted_status_id).select(:created_at).first&.created_at)
+  end
+
+  def reset_data
+    self.statuses_count = account.statuses.where(visibility: %i(public unlisted)).tagged_with(tag).count
+    self.last_status_at = account.statuses.where(visibility: %i(public unlisted)).tagged_with(tag).select(:created_at).first&.created_at
+  end
+
+  private
+
+  def validate_featured_tags_limit
+    errors.add(:base, I18n.t('featured_tags.errors.limit')) if account.featured_tags.count >= 10
+  end
+end
diff --git a/app/models/feed.rb b/app/models/feed.rb
index 5bce88f25..0e8943ff8 100644
--- a/app/models/feed.rb
+++ b/app/models/feed.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class Feed
+  include Redisable
+
   def initialize(type, id)
     @type = type
     @id   = id
@@ -27,8 +29,4 @@ class Feed
   def key
     FeedManager.instance.key(@type, @id)
   end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/app/models/import.rb b/app/models/import.rb
index 55e970b0d..a7a0d8065 100644
--- a/app/models/import.rb
+++ b/app/models/import.rb
@@ -13,20 +13,30 @@
 #  data_file_size    :integer
 #  data_updated_at   :datetime
 #  account_id        :bigint(8)        not null
+#  overwrite         :boolean          default(FALSE), not null
 #
 
 class Import < ApplicationRecord
-  FILE_TYPES = ['text/plain', 'text/csv'].freeze
+  FILE_TYPES = %w(text/plain text/csv).freeze
+  MODES = %i(merge overwrite).freeze
 
   self.inheritance_column = false
 
   belongs_to :account
 
-  enum type: [:following, :blocking, :muting]
+  enum type: [:following, :blocking, :muting, :domain_blocking]
 
   validates :type, presence: true
 
   has_attached_file :data
   validates_attachment_content_type :data, content_type: FILE_TYPES
   validates_attachment_presence :data
+
+  def mode
+    overwrite? ? :overwrite : :merge
+  end
+
+  def mode=(str)
+    self.overwrite = str.to_sym == :overwrite
+  end
 end
diff --git a/app/models/media_attachment.rb b/app/models/media_attachment.rb
index 601b14223..81397a18e 100644
--- a/app/models/media_attachment.rb
+++ b/app/models/media_attachment.rb
@@ -25,11 +25,11 @@ class MediaAttachment < ApplicationRecord
 
   enum type: [:image, :gifv, :video, :audio, :unknown]
 
-  IMAGE_FILE_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.gif'].freeze
+  IMAGE_FILE_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.gif', '.webp'].freeze
   VIDEO_FILE_EXTENSIONS = ['.webm', '.mp4', '.m4v', '.mov'].freeze
   AUDIO_FILE_EXTENSIONS = ['.mp3', '.m4a', '.wav', '.ogg'].freeze
 
-  IMAGE_MIME_TYPES             = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  IMAGE_MIME_TYPES             = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
   VIDEO_MIME_TYPES             = ['video/webm', 'video/mp4', 'video/quicktime'].freeze
   VIDEO_CONVERTIBLE_MIME_TYPES = ['video/webm', 'video/quicktime'].freeze
   AUDIO_MIME_TYPES             = ['audio/mpeg', 'audio/mp4', 'audio/vnd.wav', 'audio/wav', 'audio/x-wav', 'audio/x-wave', 'audio/ogg',].freeze
@@ -105,8 +105,8 @@ class MediaAttachment < ApplicationRecord
                     convert_options: { all: '-quality 90 -strip' }
 
   validates_attachment_content_type :file, content_type: IMAGE_MIME_TYPES + VIDEO_MIME_TYPES + AUDIO_MIME_TYPES
-  validates_attachment_size :file, less_than: IMAGE_LIMIT, unless: :video?
-  validates_attachment_size :file, less_than: VIDEO_LIMIT, if: :video?
+  validates_attachment_size :file, less_than: IMAGE_LIMIT, unless: :video_or_gifv?
+  validates_attachment_size :file, less_than: VIDEO_LIMIT, if: :video_or_gifv?
   remotable_attachment :file, VIDEO_LIMIT
 
   include Attachmentable
@@ -129,6 +129,10 @@ class MediaAttachment < ApplicationRecord
     file.blank? && remote_url.present?
   end
 
+  def video_or_gifv?
+    video? || gifv?
+  end
+
   def to_param
     shortcode
   end
diff --git a/app/models/preview_card.rb b/app/models/preview_card.rb
index a792b352b..f26ea0c74 100644
--- a/app/models/preview_card.rb
+++ b/app/models/preview_card.rb
@@ -25,7 +25,7 @@
 #
 
 class PreviewCard < ApplicationRecord
-  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
   LIMIT = 1.megabytes
 
   self.inheritance_column = false
diff --git a/app/models/tag.rb b/app/models/tag.rb
index 99830ae92..4373e967b 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -14,6 +14,7 @@ class Tag < ApplicationRecord
   has_and_belongs_to_many :accounts
   has_and_belongs_to_many :sample_accounts, -> { searchable.discoverable.popular.limit(3) }, class_name: 'Account'
 
+  has_many :featured_tags, dependent: :destroy, inverse_of: :tag
   has_one :account_tag_stat, dependent: :destroy
 
   HASHTAG_NAME_RE = '[[:word:]_]*[[:alpha:]_·][[:word:]_]*'
@@ -23,6 +24,7 @@ class Tag < ApplicationRecord
 
   scope :discoverable, -> { joins(:account_tag_stat).where(AccountTagStat.arel_table[:accounts_count].gt(0)).where(account_tag_stats: { hidden: false }).order(Arel.sql('account_tag_stats.accounts_count desc')) }
   scope :hidden, -> { where(account_tag_stats: { hidden: true }) }
+  scope :most_used, ->(account) { joins(:statuses).where(statuses: { account: account }).group(:id).order(Arel.sql('count(*) desc')) }
 
   delegate :accounts_count,
            :accounts_count=,
diff --git a/app/models/trending_tags.rb b/app/models/trending_tags.rb
index 3a8be2164..148535c21 100644
--- a/app/models/trending_tags.rb
+++ b/app/models/trending_tags.rb
@@ -7,6 +7,8 @@ class TrendingTags
   THRESHOLD            = 5
 
   class << self
+    include Redisable
+
     def record_use!(tag, account, at_time = Time.now.utc)
       return if disallowed_hashtags.include?(tag.name) || account.silenced? || account.bot?
 
@@ -59,9 +61,5 @@ class TrendingTags
       @disallowed_hashtags = @disallowed_hashtags.split(' ') if @disallowed_hashtags.is_a? String
       @disallowed_hashtags = @disallowed_hashtags.map(&:downcase)
     end
-
-    def redis
-      Redis.current
-    end
   end
 end
diff --git a/app/serializers/manifest_serializer.rb b/app/serializers/manifest_serializer.rb
index 859ef0d14..cc8b9a4d4 100644
--- a/app/serializers/manifest_serializer.rb
+++ b/app/serializers/manifest_serializer.rb
@@ -52,6 +52,14 @@ class ManifestSerializer < ActiveModel::Serializer
   end
 
   def share_target
-    { url_template: 'share?title={title}&text={text}&url={url}' }
+    {
+      url_template: 'share?title={title}&text={text}&url={url}',
+      action: 'share',
+      params: {
+        title: 'title',
+        text: 'text',
+        url: 'url',
+      },
+    }
   end
 end
diff --git a/app/services/activitypub/process_account_service.rb b/app/services/activitypub/process_account_service.rb
index 487456f3a..5e3308428 100644
--- a/app/services/activitypub/process_account_service.rb
+++ b/app/services/activitypub/process_account_service.rb
@@ -212,7 +212,7 @@ class ActivityPub::ProcessAccountService < BaseService
   end
 
   def clear_tombstones!
-    Tombstone.delete_all(account_id: @account.id)
+    Tombstone.where(account_id: @account.id).delete_all
   end
 
   def protocol_changed?
diff --git a/app/services/batched_remove_status_service.rb b/app/services/batched_remove_status_service.rb
index 61c408926..d78f506c6 100644
--- a/app/services/batched_remove_status_service.rb
+++ b/app/services/batched_remove_status_service.rb
@@ -2,6 +2,7 @@
 
 class BatchedRemoveStatusService < BaseService
   include StreamEntryRenderer
+  include Redisable
 
   # Delete given statuses and reblogs of them
   # Dispatch PuSH updates of the deleted statuses, but only local ones
@@ -120,10 +121,6 @@ class BatchedRemoveStatusService < BaseService
     end
   end
 
-  def redis
-    Redis.current
-  end
-
   def build_xml(stream_entry)
     return @activity_xml[stream_entry.id] if @activity_xml.key?(stream_entry.id)
 
diff --git a/app/services/follow_service.rb b/app/services/follow_service.rb
index 9d36a1449..92d8c864a 100644
--- a/app/services/follow_service.rb
+++ b/app/services/follow_service.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class FollowService < BaseService
+  include Redisable
+
   # Follow a remote user, notify remote user about the follow
   # @param [Account] source_account From which to follow
   # @param [String, Account] uri User URI to follow in the form of username@domain (or account record)
@@ -67,10 +69,6 @@ class FollowService < BaseService
     follow
   end
 
-  def redis
-    Redis.current
-  end
-
   def build_follow_request_xml(follow_request)
     OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.follow_request_salmon(follow_request))
   end
diff --git a/app/services/import_service.rb b/app/services/import_service.rb
new file mode 100644
index 000000000..3f558626e
--- /dev/null
+++ b/app/services/import_service.rb
@@ -0,0 +1,90 @@
+# frozen_string_literal: true
+
+require 'csv'
+
+class ImportService < BaseService
+  ROWS_PROCESSING_LIMIT = 20_000
+
+  def call(import)
+    @import  = import
+    @account = @import.account
+    @data    = CSV.new(import_data).reject(&:blank?)
+
+    case @import.type
+    when 'following'
+      import_follows!
+    when 'blocking'
+      import_blocks!
+    when 'muting'
+      import_mutes!
+    when 'domain_blocking'
+      import_domain_blocks!
+    end
+  end
+
+  private
+
+  def import_follows!
+    import_relationships!('follow', 'unfollow', @account.following, follow_limit)
+  end
+
+  def import_blocks!
+    import_relationships!('block', 'unblock', @account.blocking, ROWS_PROCESSING_LIMIT)
+  end
+
+  def import_mutes!
+    import_relationships!('mute', 'unmute', @account.muting, ROWS_PROCESSING_LIMIT)
+  end
+
+  def import_domain_blocks!
+    items = @data.take(ROWS_PROCESSING_LIMIT).map { |row| row.first.strip }
+
+    if @import.overwrite?
+      presence_hash = items.each_with_object({}) { |id, mapping| mapping[id] = true }
+
+      @account.domain_blocks.find_each do |domain_block|
+        if presence_hash[domain_block.domain]
+          items.delete(domain_block.domain)
+        else
+          @account.unblock_domain!(domain_block.domain)
+        end
+      end
+    end
+
+    items.each do |domain|
+      @account.block_domain!(domain)
+    end
+
+    AfterAccountDomainBlockWorker.push_bulk(items) do |domain|
+      [@account.id, domain]
+    end
+  end
+
+  def import_relationships!(action, undo_action, overwrite_scope, limit)
+    items = @data.take(limit).map { |row| row.first.strip }
+
+    if @import.overwrite?
+      presence_hash = items.each_with_object({}) { |id, mapping| mapping[id] = true }
+
+      overwrite_scope.find_each do |target_account|
+        if presence_hash[target_account.acct]
+          items.delete(target_account.acct)
+        else
+          Import::RelationshipWorker.perform_async(@account.id, target_account.acct, undo_action)
+        end
+      end
+    end
+
+    Import::RelationshipWorker.push_bulk(items) do |acct|
+      [@account.id, acct, action]
+    end
+  end
+
+  def import_data
+    Paperclip.io_adapters.for(@import.data).read
+  end
+
+  def follow_limit
+    FollowLimitValidator.limit_for_account(@account)
+  end
+end
diff --git a/app/services/post_status_service.rb b/app/services/post_status_service.rb
index 5d431c42a..cfb266fbb 100644
--- a/app/services/post_status_service.rb
+++ b/app/services/post_status_service.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class PostStatusService < BaseService
+  include Redisable
+
   MIN_SCHEDULE_OFFSET = 5.minutes.freeze
 
   # Post a text status update, fetch and notify remote users mentioned
@@ -115,10 +117,6 @@ class PostStatusService < BaseService
     ProcessHashtagsService.new
   end
 
-  def redis
-    Redis.current
-  end
-
   def scheduled?
     @scheduled_at.present?
   end
diff --git a/app/services/process_hashtags_service.rb b/app/services/process_hashtags_service.rb
index cf7471c98..d5ec076a8 100644
--- a/app/services/process_hashtags_service.rb
+++ b/app/services/process_hashtags_service.rb
@@ -2,12 +2,22 @@
 
 class ProcessHashtagsService < BaseService
   def call(status, tags = [])
-    tags = Extractor.extract_hashtags(status.text) if status.local?
+    tags    = Extractor.extract_hashtags(status.text) if status.local?
+    records = []
 
     tags.map { |str| str.mb_chars.downcase }.uniq(&:to_s).each do |name|
       tag = Tag.where(name: name).first_or_create(name: name)
+
       status.tags << tag
+      records << tag
+
       TrendingTags.record_use!(tag, status.account, status.created_at) if status.public_visibility?
     end
+
+    return unless status.public_visibility? || status.unlisted_visibility?
+
+    status.account.featured_tags.where(tag_id: records.map(&:id)).each do |featured_tag|
+      featured_tag.increment(status.created_at)
+    end
   end
 end
diff --git a/app/services/remove_status_service.rb b/app/services/remove_status_service.rb
index 4bee86c8a..99c8e6cbb 100644
--- a/app/services/remove_status_service.rb
+++ b/app/services/remove_status_service.rb
@@ -2,6 +2,7 @@
 
 class RemoveStatusService < BaseService
   include StreamEntryRenderer
+  include Redisable
 
   def call(status, **options)
     @payload      = Oj.dump(event: :delete, payload: status.id.to_s)
@@ -56,7 +57,7 @@ class RemoveStatusService < BaseService
 
   def remove_from_affected
     @mentions.map(&:account).select(&:local?).each do |account|
-      Redis.current.publish("timeline:#{account.id}", @payload)
+      redis.publish("timeline:#{account.id}", @payload)
     end
   end
 
@@ -131,26 +132,30 @@ class RemoveStatusService < BaseService
   end
 
   def remove_from_hashtags
+    @account.featured_tags.where(tag_id: @status.tags.pluck(:id)).each do |featured_tag|
+      featured_tag.decrement(@status.id)
+    end
+
     return unless @status.public_visibility?
 
     @tags.each do |hashtag|
-      Redis.current.publish("timeline:hashtag:#{hashtag}", @payload)
-      Redis.current.publish("timeline:hashtag:#{hashtag}:local", @payload) if @status.local?
+      redis.publish("timeline:hashtag:#{hashtag}", @payload)
+      redis.publish("timeline:hashtag:#{hashtag}:local", @payload) if @status.local?
     end
   end
 
   def remove_from_public
     return unless @status.public_visibility?
 
-    Redis.current.publish('timeline:public', @payload)
-    Redis.current.publish('timeline:public:local', @payload) if @status.local?
+    redis.publish('timeline:public', @payload)
+    redis.publish('timeline:public:local', @payload) if @status.local?
   end
 
   def remove_from_media
     return unless @status.public_visibility?
 
-    Redis.current.publish('timeline:public:media', @payload)
-    Redis.current.publish('timeline:public:local:media', @payload) if @status.local?
+    redis.publish('timeline:public:media', @payload)
+    redis.publish('timeline:public:local:media', @payload) if @status.local?
   end
 
   def remove_from_direct
@@ -159,8 +164,4 @@ class RemoveStatusService < BaseService
     end
     Redis.current.publish("timeline:direct:#{@account.id}", @payload) if @account.local?
   end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/app/views/accounts/show.html.haml b/app/views/accounts/show.html.haml
index 0ee9dd7de..0da69728f 100644
--- a/app/views/accounts/show.html.haml
+++ b/app/views/accounts/show.html.haml
@@ -63,4 +63,17 @@
         - @endorsed_accounts.each do |account|
           = account_link_to account
 
+    - @account.featured_tags.order(statuses_count: :desc).each do |featured_tag|
+      .directory__tag{ class: params[:tag] == featured_tag.name ? 'active' : nil }
+        = link_to short_account_tag_path(@account, featured_tag.tag) do
+          %h4
+            = fa_icon 'hashtag'
+            = featured_tag.name
+            %small
+              - if featured_tag.last_status_at.nil?
+                = t('accounts.nothing_here')
+              - else
+                %time{ datetime: featured_tag.last_status_at.iso8601, title: l(featured_tag.last_status_at) }= l featured_tag.last_status_at
+          .trends__item__current= number_to_human featured_tag.statuses_count, strip_insignificant_zeros: true
+
     = render 'application/sidebar'
diff --git a/app/views/admin/change_emails/show.html.haml b/app/views/admin/change_emails/show.html.haml
index 6febef9b1..6ff0d785e 100644
--- a/app/views/admin/change_emails/show.html.haml
+++ b/app/views/admin/change_emails/show.html.haml
@@ -3,7 +3,7 @@
 
 = simple_form_for @user, url: admin_account_change_email_path(@account.id) do |f|
   .fields-group
-    = f.input :email, wrapper: :with_label, disabled: true, label: t('admin.accounts.change_email.current_email')
+    = f.input :email, wrapper: :with_label, hint: false, disabled: true, label: t('admin.accounts.change_email.current_email')
 
   .fields-group
     = f.input :unconfirmed_email, wrapper: :with_label, label: t('admin.accounts.change_email.new_email')
diff --git a/app/views/settings/featured_tags/index.html.haml b/app/views/settings/featured_tags/index.html.haml
new file mode 100644
index 000000000..5f69517f3
--- /dev/null
+++ b/app/views/settings/featured_tags/index.html.haml
@@ -0,0 +1,27 @@
+- content_for :page_title do
+  = t('settings.featured_tags')
+
+= simple_form_for @featured_tag, url: settings_featured_tags_path do |f|
+  = render 'shared/error_messages', object: @featured_tag
+
+  .fields-group
+    = f.input :name, wrapper: :with_block_label, hint: safe_join([t('simple_form.hints.featured_tag.name'), safe_join(@most_used_tags.map { |tag| link_to("##{tag.name}", settings_featured_tags_path(featured_tag: { name: tag.name }), method: :post) }, ', ')], ' ')
+
+  .actions
+    = f.button :button, t('featured_tags.add_new'), type: :submit
+
+%hr.spacer/
+
+- @featured_tags.each do |featured_tag|
+  .directory__tag{ class: params[:tag] == featured_tag.name ? 'active' : nil }
+    %div
+      %h4
+        = fa_icon 'hashtag'
+        = featured_tag.name
+        %small
+          - if featured_tag.last_status_at.nil?
+            = t('accounts.nothing_here')
+          - else
+            %time{ datetime: featured_tag.last_status_at.iso8601, title: l(featured_tag.last_status_at) }= l featured_tag.last_status_at
+          = table_link_to 'trash', t('filters.index.delete'), settings_featured_tag_path(featured_tag), method: :delete, data: { confirm: t('admin.accounts.are_you_sure') }
+      .trends__item__current= number_to_human featured_tag.statuses_count, strip_insignificant_zeros: true
diff --git a/app/views/settings/imports/show.html.haml b/app/views/settings/imports/show.html.haml
index 4512fc714..7bb4beb01 100644
--- a/app/views/settings/imports/show.html.haml
+++ b/app/views/settings/imports/show.html.haml
@@ -5,8 +5,11 @@
   .field-group
     = f.input :type, collection: Import.types.keys, wrapper: :with_block_label, include_blank: false, label_method: lambda { |type| I18n.t("imports.types.#{type}") }, hint: t('imports.preface')
 
-  .field-group
-    = f.input :data, wrapper: :with_block_label, hint: t('simple_form.hints.imports.data')
+  .fields-row
+    .fields-group.fields-row__column.fields-row__column-6
+      = f.input :data, wrapper: :with_block_label, hint: t('simple_form.hints.imports.data')
+    .fields-group.fields-row__column.fields-row__column-6
+      = f.input :mode, as: :radio_buttons, collection: Import::MODES, label_method: lambda { |mode| safe_join([I18n.t("imports.modes.#{mode}"), content_tag(:span, I18n.t("imports.modes.#{mode}_long"), class: 'hint')]) }, collection_wrapper_tag: 'ul', item_wrapper_tag: 'li'
 
   .actions
     = f.button :button, t('imports.upload'), type: :submit
diff --git a/app/workers/import/relationship_worker.rb b/app/workers/import/relationship_worker.rb
index 1dd8bf8fb..e9db20a46 100644
--- a/app/workers/import/relationship_worker.rb
+++ b/app/workers/import/relationship_worker.rb
@@ -13,11 +13,17 @@ class Import::RelationshipWorker
 
     case relationship
     when 'follow'
-      FollowService.new.call(from_account, target_account.acct)
+      FollowService.new.call(from_account, target_account)
+    when 'unfollow'
+      UnfollowService.new.call(from_account, target_account)
     when 'block'
       BlockService.new.call(from_account, target_account)
+    when 'unblock'
+      UnblockService.new.call(from_account, target_account)
     when 'mute'
       MuteService.new.call(from_account, target_account)
+    when 'unmute'
+      UnmuteService.new.call(from_account, target_account)
     end
   rescue ActiveRecord::RecordNotFound
     true
diff --git a/app/workers/import_worker.rb b/app/workers/import_worker.rb
index aeb221cf6..dfa71b29e 100644
--- a/app/workers/import_worker.rb
+++ b/app/workers/import_worker.rb
@@ -1,44 +1,14 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 class ImportWorker
   include Sidekiq::Worker
 
   sidekiq_options queue: 'pull', retry: false
 
-  attr_reader :import
-
   def perform(import_id)
-    @import = Import.find(import_id)
-
-    Import::RelationshipWorker.push_bulk(import_rows) do |row|
-      [@import.account_id, row.first, relationship_type]
-    end
-
-    @import.destroy
-  end
-
-  private
-
-  def import_contents
-    Paperclip.io_adapters.for(@import.data).read
-  end
-
-  def relationship_type
-    case @import.type
-    when 'following'
-      'follow'
-    when 'blocking'
-      'block'
-    when 'muting'
-      'mute'
-    end
-  end
-
-  def import_rows
-    rows = CSV.new(import_contents).reject(&:blank?)
-    rows = rows.take(FollowLimitValidator.limit_for_account(@import.account)) if @import.type == 'following'
-    rows
+    import = Import.find(import_id)
+    ImportService.new.call(import)
+  ensure
+    import&.destroy
   end
 end
diff --git a/app/workers/scheduler/feed_cleanup_scheduler.rb b/app/workers/scheduler/feed_cleanup_scheduler.rb
index cd2273418..bf5e20757 100644
--- a/app/workers/scheduler/feed_cleanup_scheduler.rb
+++ b/app/workers/scheduler/feed_cleanup_scheduler.rb
@@ -2,6 +2,7 @@
 
 class Scheduler::FeedCleanupScheduler
   include Sidekiq::Worker
+  include Redisable
 
   sidekiq_options unique: :until_executed, retry: 0
 
@@ -57,8 +58,4 @@ class Scheduler::FeedCleanupScheduler
   def feed_manager
     FeedManager.instance
   end
-
-  def redis
-    Redis.current
-  end
 end
diff --git a/config/i18n-tasks.yml b/config/i18n-tasks.yml
index e9564692f..b2a621e85 100644
--- a/config/i18n-tasks.yml
+++ b/config/i18n-tasks.yml
@@ -35,11 +35,8 @@ ignore_missing:
   - 'activemodel.errors.*'
   - 'activerecord.attributes.*'
   - 'activerecord.errors.*'
-  - '{devise,pagination,doorkeeper}.*'
+  - '{pagination,doorkeeper}.*'
   - '{date,datetime,time,number}.*'
-  - 'simple_form.{yes,no}'
-  - 'simple_form.{placeholders,hints,labels}.*'
-  - 'simple_form.{error_notification,required}.:'
   - 'errors.messages.*'
   - 'activerecord.errors.models.doorkeeper/*'
   - 'sessions.{browsers,platforms}.*'
diff --git a/config/initializers/twitter_regex.rb b/config/initializers/twitter_regex.rb
index 0e8f5bfeb..0ddbbee98 100644
--- a/config/initializers/twitter_regex.rb
+++ b/config/initializers/twitter_regex.rb
@@ -1,7 +1,7 @@
 module Twitter
   class Regex
-    REGEXEN[:valid_general_url_path_chars] = /[^\p{White_Space}\(\)\?]/iou
-    REGEXEN[:valid_url_path_ending_chars] = /[^\p{White_Space}\(\)\?!\*';:=\,\.\$%\[\]~&\|@]|(?:#{REGEXEN[:valid_url_balanced_parens]})/iou
+    REGEXEN[:valid_general_url_path_chars] = /[^\p{White_Space}<>\(\)\?]/iou
+    REGEXEN[:valid_url_path_ending_chars] = /[^\p{White_Space}\(\)\?!\*"'「」<>;:=\,\.\$%\[\]~&\|@]|(?:#{REGEXEN[:valid_url_balanced_parens]})/iou
     REGEXEN[:valid_url_balanced_parens] = /
       \(
         (?:
diff --git a/config/locales/devise.en.yml b/config/locales/devise.en.yml
index bd0642b25..726c0504e 100644
--- a/config/locales/devise.en.yml
+++ b/config/locales/devise.en.yml
@@ -20,17 +20,17 @@ en:
         action: Verify email address
         action_with_app: Confirm and return to %{app}
         explanation: You have created an account on %{host} with this email address. You are one click away from activating it. If this wasn't you, please ignore this email.
-        extra_html: Please also check out <a href="%{terms_path}">the rules of the instance</a> and <a href="%{policy_path}">our terms of service</a>.
+        extra_html: Please also check out <a href="%{terms_path}">the rules of the server</a> and <a href="%{policy_path}">our terms of service</a>.
         subject: 'Mastodon: Confirmation instructions for %{instance}'
         title: Verify email address
       email_changed:
         explanation: 'The email address for your account is being changed to:'
-        extra: If you did not change your email, it is likely that someone has gained access to your account. Please change your password immediately or contact the instance admin if you're locked out of your account.
+        extra: If you did not change your email, it is likely that someone has gained access to your account. Please change your password immediately or contact the server admin if you're locked out of your account.
         subject: 'Mastodon: Email changed'
         title: New email address
       password_change:
         explanation: The password for your account has been changed.
-        extra: If you did not change your password, it is likely that someone has gained access to your account. Please change your password immediately or contact the instance admin if you're locked out of your account.
+        extra: If you did not change your password, it is likely that someone has gained access to your account. Please change your password immediately or contact the server admin if you're locked out of your account.
         subject: 'Mastodon: Password changed'
         title: Password changed
       reconfirmation_instructions:
diff --git a/config/locales/devise.ja.yml b/config/locales/devise.ja.yml
index cae76d493..bd2bb71bb 100644
--- a/config/locales/devise.ja.yml
+++ b/config/locales/devise.ja.yml
@@ -20,17 +20,17 @@ ja:
         action: メールアドレスの確認
         action_with_app: 確認し %{app} に戻る
         explanation: このメールアドレスで%{host}にアカウントを作成しました。有効にするまであと一歩です。もし心当たりがない場合、申し訳ありませんがこのメールを無視してください。
-        extra_html: また <a href="%{terms_path}">インスタンスのルール</a> と <a href="%{policy_path}">利用規約</a> もお読みください。
+        extra_html: また <a href="%{terms_path}">サーバーのルール</a> と <a href="%{policy_path}">利用規約</a> もお読みください。
         subject: 'Mastodon: メールアドレスの確認 %{instance}'
         title: メールアドレスの確認
       email_changed:
         explanation: 'アカウントのメールアドレスは以下のように変更されます:'
-        extra: メールアドレスの変更を行っていない場合、他の誰かがあなたのアカウントにアクセスした可能性があります。すぐにパスワードを変更するか、アカウントがロックされている場合はインスタンス管理者に連絡してください。
+        extra: メールアドレスの変更を行っていない場合、他の誰かがあなたのアカウントにアクセスした可能性があります。すぐにパスワードを変更するか、アカウントがロックされている場合はサーバー管理者に連絡してください。
         subject: 'Mastodon: メールアドレスの変更'
         title: 新しいメールアドレス
       password_change:
         explanation: パスワードが変更されました。
-        extra: パスワードの変更を行っていない場合、他の誰かがあなたのアカウントにアクセスした可能性があります。すぐにパスワードを変更するか、アカウントがロックされている場合はインスタンス管理者に連絡してください。
+        extra: パスワードの変更を行っていない場合、他の誰かがあなたのアカウントにアクセスした可能性があります。すぐにパスワードを変更するか、アカウントがロックされている場合はサーバー管理者に連絡してください。
         subject: 'Mastodon: パスワードが変更されました'
         title: パスワードの変更
       reconfirmation_instructions:
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b8d80a748..a9553aace 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -7,7 +7,7 @@ en:
     administered_by: 'Administered by:'
     api: API
     apps: Mobile apps
-    closed_registrations: Registrations are currently closed on this instance. However! You can find a different instance to make an account on and get access to the very same network from there.
+    closed_registrations: Registrations are currently closed on this server. However! You can find a different server to make an account on and get access to the very same network from there.
     contact: Contact
     contact_missing: Not set
     contact_unavailable: N/A
@@ -27,7 +27,7 @@ en:
     generic_description: "%{domain} is one server in the network"
     hosted_on: Mastodon hosted on %{domain}
     learn_more: Learn more
-    other_instances: Instance list
+    other_instances: Server list
     privacy_policy: Privacy policy
     source_code: Source code
     status_count_after:
@@ -386,7 +386,7 @@ en:
         desc_html: Modify the look with CSS loaded on every page
         title: Custom CSS
       hero:
-        desc_html: Displayed on the frontpage. At least 600x100px recommended. When not set, falls back to instance thumbnail
+        desc_html: Displayed on the frontpage. At least 600x100px recommended. When not set, falls back to server thumbnail
         title: Hero image
       hide_followers_count:
         desc_html: Do not show followers count on user profiles
@@ -395,8 +395,8 @@ en:
         desc_html: Displayed on multiple pages. At least 293×205px recommended. When not set, falls back to default mascot
         title: Mascot image
       peers_api_enabled:
-        desc_html: Domain names this instance has encountered in the fediverse
-        title: Publish list of discovered instances
+        desc_html: Domain names this server has encountered in the fediverse
+        title: Publish list of discovered servers
       preview_sensitive_media:
         desc_html: Link previews on other websites will display a thumbnail even if the media is marked as sensitive
         title: Show sensitive media in OpenGraph previews
@@ -424,20 +424,20 @@ en:
         title: Show staff badge
       site_description:
         desc_html: Introductory paragraph on the frontpage. Describe what makes this Mastodon server special and anything else important. You can use HTML tags, in particular <code>&lt;a&gt;</code> and <code>&lt;em&gt;</code>.
-        title: Instance description
+        title: Server description
       site_description_extended:
-        desc_html: A good place for your code of conduct, rules, guidelines and other things that set your instance apart. You can use HTML tags
+        desc_html: A good place for your code of conduct, rules, guidelines and other things that set your server apart. You can use HTML tags
         title: Custom extended information
       site_short_description:
-        desc_html: Displayed in sidebar and meta tags. Describe what Mastodon is and what makes this server special in a single paragraph. If empty, defaults to instance description.
-        title: Short instance description
+        desc_html: Displayed in sidebar and meta tags. Describe what Mastodon is and what makes this server special in a single paragraph. If empty, defaults to server description.
+        title: Short server description
       site_terms:
         desc_html: You can write your own privacy policy, terms of service or other legalese. You can use HTML tags
         title: Custom terms of service
-      site_title: Instance name
+      site_title: Server name
       thumbnail:
         desc_html: Used for previews via OpenGraph and API. 1200x630px recommended
-        title: Instance thumbnail
+        title: Server thumbnail
       timeline_preview:
         desc_html: Display public timeline on landing page
         title: Timeline preview
@@ -498,7 +498,7 @@ en:
     warning: Be very careful with this data. Never share it with anyone!
     your_token: Your access token
   auth:
-    agreement_html: By clicking "Sign up" below you agree to follow <a href="%{rules_path}">the rules of the instance</a> and <a href="%{terms_path}">our terms of service</a>.
+    agreement_html: By clicking "Sign up" below you agree to follow <a href="%{rules_path}">the rules of the server</a> and <a href="%{terms_path}">our terms of service</a>.
     change_password: Password
     confirm_email: Confirm email
     delete_account: Delete account
@@ -552,7 +552,7 @@ en:
     description_html: This will <strong>permanently, irreversibly</strong> remove content from your account and deactivate it. Your username will remain reserved to prevent future impersonations.
     proceed: Delete account
     success_msg: Your account was successfully deleted
-    warning_html: Only deletion of content from this particular instance is guaranteed. Content that has been widely shared is likely to leave traces. Offline servers and servers that have unsubscribed from your updates will not update their databases.
+    warning_html: Only deletion of content from this particular server is guaranteed. Content that has been widely shared is likely to leave traces. Offline servers and servers that have unsubscribed from your updates will not update their databases.
     warning_title: Disseminated content availability
   directories:
     directory: Profile directory
@@ -591,6 +591,10 @@ en:
     lists: Lists
     mutes: You mute
     storage: Media storage
+  featured_tags:
+    add_new: Add new
+    errors:
+      limit: You have already featured the maximum amount of hashtags
   filters:
     contexts:
       home: Home timeline
@@ -609,7 +613,7 @@ en:
       title: Add new filter
   followers:
     domain: Domain
-    explanation_html: If you want to ensure the privacy of your statuses, you must be aware of who is following you. <strong>Your private statuses are delivered to all instances where you have followers</strong>. You may wish to review them, and remove followers if you do not trust your privacy to be respected by the staff or software of those instances.
+    explanation_html: If you want to ensure the privacy of your statuses, you must be aware of who is following you. <strong>Your private statuses are delivered to all servers where you have followers</strong>. You may wish to review them, and remove followers if you do not trust your privacy to be respected by the staff or software of those servers.
     followers_count: Number of followers
     lock_link: Lock your account
     purge: Remove from followers
@@ -632,10 +636,16 @@ en:
       one: Something isn't quite right yet! Please review the error below
       other: Something isn't quite right yet! Please review %{count} errors below
   imports:
-    preface: You can import data that you have exported from another instance, such as a list of the people you are following or blocking.
+    modes:
+      merge: Merge
+      merge_long: Keep existing records and add new ones
+      overwrite: Overwrite
+      overwrite_long: Replace current records with the new ones
+    preface: You can import data that you have exported from another server, such as a list of the people you are following or blocking.
     success: Your data was successfully uploaded and will now be processed in due time
     types:
       blocking: Blocking list
+      domain_blocking: Domain blocking list
       following: Following list
       muting: Muting list
     upload: Upload
@@ -657,7 +667,7 @@ en:
       one: 1 use
       other: "%{count} uses"
     max_uses_prompt: No limit
-    prompt: Generate and share links with others to grant access to this instance
+    prompt: Generate and share links with others to grant access to this server
     table:
       expires_at: Expires
       uses: Uses
@@ -805,6 +815,7 @@ en:
     development: Development
     edit_profile: Edit profile
     export: Data export
+    featured_tags: Featured hashtags
     flavours: Flavours
     followers: Authorized followers
     import: Import
@@ -985,7 +996,7 @@ en:
       final_action: Start posting
       final_step: 'Start posting! Even without followers your public messages may be seen by others, for example on the local timeline and in hashtags. You may want to introduce yourself on the #introductions hashtag.'
       full_handle: Your full handle
-      full_handle_hint: This is what you would tell your friends so they can message or follow you from another instance.
+      full_handle_hint: This is what you would tell your friends so they can message or follow you from another server.
       review_preferences_action: Change preferences
       review_preferences_step: Make sure to set your preferences, such as which emails you'd like to receive, or what privacy level you’d like your posts to default to. If you don’t have motion sickness, you could choose to enable GIF autoplay.
       subject: Welcome to Mastodon
diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index 2b1b70639..e16ce31a9 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -7,7 +7,7 @@ ja:
     administered_by: '管理者:'
     api: API
     apps: アプリ
-    closed_registrations: 現在このインスタンスでの新規登録は受け付けていません。しかし、他のインスタンスにアカウントを作成しても全く同じネットワークに参加することができます。
+    closed_registrations: 現在このサーバーでの新規登録は受け付けていません。しかし、他のサーバーにアカウントを作成しても全く同じネットワークに参加することができます。
     contact: 連絡先
     contact_missing: 未設定
     contact_unavailable: N/A
@@ -24,10 +24,10 @@ ja:
       real_conversation_title: 本当のコミュニケーションのために
       within_reach_body: デベロッパーフレンドリーな API により実現された、iOS や Android、その他様々なプラットフォームのためのアプリでどこでも友人とやりとりできます。
       within_reach_title: いつでも身近に
-    generic_description: "%{domain} は、Mastodon インスタンスの一つです"
+    generic_description: "%{domain} は、Mastodon サーバーの一つです"
     hosted_on: Mastodon hosted on %{domain}
     learn_more: もっと詳しく
-    other_instances: 他のインスタンス
+    other_instances: 他のサーバー
     privacy_policy: プライバシーポリシー
     source_code: ソースコード
     status_count_after:
@@ -310,7 +310,7 @@ ja:
         all: すべて
         limited: 制限あり
         title: モデレーション
-      title: 既知のインスタンス
+      title: 既知のサーバー
       total_blocked_by_us: ブロック合計
       total_followed_by_them: 被フォロー合計
       total_followed_by_us: フォロー合計
@@ -392,8 +392,8 @@ ja:
         desc_html: 複数のページに表示されます。サイズは293x205px以上推奨です。未設定の場合、標準のマスコットが使用されます
         title: マスコットイメージ
       peers_api_enabled:
-        desc_html: 連合内でこのインスタンスが遭遇したドメインの名前
-        title: 接続しているインスタンスのリストを公開する
+        desc_html: 連合内でこのサーバーが遭遇したドメインの名前
+        title: 接続しているサーバーのリストを公開する
       preview_sensitive_media:
         desc_html: 他のウェブサイトにリンクを貼った際、メディアが閲覧注意としてマークされていてもサムネイルが表示されます
         title: OpenGraphによるプレビューで閲覧注意のメディアも表示する
@@ -420,21 +420,21 @@ ja:
         desc_html: ユーザーページにスタッフのバッジを表示します
         title: スタッフバッジを表示する
       site_description:
-        desc_html: フロントページへの表示に使用される紹介文です。このMastodonインスタンスを特徴付けることやその他重要なことを記述してください。HTMLタグ、特に<code>&lt;a&gt;</code> と <code>&lt;em&gt;</code>が使えます。
-        title: インスタンスの説明
+        desc_html: フロントページへの表示に使用される紹介文です。このMastodonサーバーを特徴付けることやその他重要なことを記述してください。HTMLタグ、特に<code>&lt;a&gt;</code> と <code>&lt;em&gt;</code>が使えます。
+        title: サーバーの説明
       site_description_extended:
-        desc_html: あなたのインスタンスにおける行動規範やルール、ガイドライン、そのほかの記述をする際に最適な場所です。HTMLタグが使えます
+        desc_html: あなたのサーバーにおける行動規範やルール、ガイドライン、そのほかの記述をする際に最適な場所です。HTMLタグが使えます
         title: カスタム詳細説明
       site_short_description:
-        desc_html: サイドバーと meta タグに表示されます。Mastodon とは何か、そしてこのサーバーの特別な何かを1段落で記述してください。空欄の場合、インスタンスの説明が使用されます。
-        title: 短いインスタンスの説明
+        desc_html: サイドバーと meta タグに表示されます。Mastodon とは何か、そしてこのサーバーの特別な何かを1段落で記述してください。空欄の場合、サーバーの説明が使用されます。
+        title: 短いサーバーの説明
       site_terms:
         desc_html: あなたは独自のプライバシーポリシーや利用規約、そのほかの法的根拠を書くことができます。HTMLタグが使えます
         title: カスタム利用規約
-      site_title: インスタンスの名前
+      site_title: サーバーの名前
       thumbnail:
         desc_html: OpenGraphとAPIによるプレビューに使用されます。サイズは1200×630px推奨です
-        title: インスタンスのサムネイル
+        title: サーバーのサムネイル
       timeline_preview:
         desc_html: ランディングページに公開タイムラインを表示します
         title: タイムラインプレビュー
@@ -495,7 +495,7 @@ ja:
     warning: このデータは気をつけて取り扱ってください。他の人と共有しないでください！
     your_token: アクセストークン
   auth:
-    agreement_html: 登録するをクリックすると <a href="%{rules_path}">インスタンスのルール</a> と <a href="%{terms_path}">プライバシーポリシー</a> に従うことに同意したことになります。
+    agreement_html: 登録するをクリックすると <a href="%{rules_path}">サーバーのルール</a> と <a href="%{terms_path}">プライバシーポリシー</a> に従うことに同意したことになります。
     change_password: パスワード
     confirm_email: メールアドレスの確認
     delete_account: アカウントの削除
@@ -513,7 +513,7 @@ ja:
       cas: CAS
       saml: SAML
     register: 登録する
-    register_elsewhere: 他のインスタンスで新規登録
+    register_elsewhere: 他のサーバーで新規登録
     resend_confirmation: 確認メールを再送する
     reset_password: パスワードを再発行
     security: セキュリティ
@@ -549,7 +549,7 @@ ja:
     description_html: あなたのアカウントに含まれるコンテンツは全て削除され、アカウントは無効化されます。これは恒久的なもので、<strong>取り消すことはできません</strong>。なりすましを防ぐために、同じユーザー名で再度登録することはできなくなります。
     proceed: アカウントを削除する
     success_msg: アカウントは正常に削除されました
-    warning_html: 削除が保証されるのはこのインスタンス上のコンテンツのみです。他のインスタンス等、外部に広く共有されたコンテンツについては痕跡が残ることがあります。また、現在接続できないサーバーや、あなたの更新を受け取らなくなったサーバーに対しては、削除は反映されません。
+    warning_html: 削除が保証されるのはこのサーバー上のコンテンツのみです。他のサーバー等、外部に広く共有されたコンテンツについては痕跡が残ることがあります。また、現在接続できないサーバーや、あなたの更新を受け取らなくなったサーバーに対しては、削除は反映されません。
     warning_title: 共有されたコンテンツについて
   directories:
     directory: ディレクトリ
@@ -588,6 +588,10 @@ ja:
     lists: リスト
     mutes: ミュート
     storage: メディア
+  featured_tags:
+    add_new: 追加
+    errors:
+      limit: 注目のハッシュタグの上限に達しました
   filters:
     contexts:
       home: ホームタイムライン
@@ -606,7 +610,7 @@ ja:
       title: 新規フィルターを追加
   followers:
     domain: ドメイン
-    explanation_html: あなたの投稿のプライバシーを確保したい場合、誰があなたをフォローしているのかを把握している必要があります。 <strong>プライベート投稿は、あなたのフォロワーがいる全てのインスタンスに配信されます</strong>。 フォロワーのインスタンスの管理者やソフトウェアがあなたのプライバシーを尊重してくれるかどうか怪しい場合は、そのフォロワーを削除した方がよいかもしれません。
+    explanation_html: あなたの投稿のプライバシーを確保したい場合、誰があなたをフォローしているのかを把握している必要があります。 <strong>プライベート投稿は、あなたのフォロワーがいる全てのサーバーに配信されます</strong>。 フォロワーのサーバーの管理者やソフトウェアがあなたのプライバシーを尊重してくれるかどうか怪しい場合は、そのフォロワーを削除した方がよいかもしれません。
     followers_count: フォロワー数
     lock_link: 承認制アカウントにする
     purge: フォロワーから削除する
@@ -629,10 +633,16 @@ ja:
       one: エラーが発生しました！ 以下のエラーを確認してください
       other: エラーが発生しました！ 以下の%{count}個のエラーを確認してください
   imports:
-    preface: 他のインスタンスでエクスポートされたファイルから、フォロー/ブロックした情報をこのインスタンス上のアカウントにインポートできます。
+    modes:
+      merge: 統合
+      merge_long: 現在のレコードを保持したまま新しいものを追加します
+      overwrite: 上書き
+      overwrite_long: 現在のレコードを新しいもので置き換えます
+    preface: 他のサーバーでエクスポートされたファイルから、フォロー/ブロックした情報をこのサーバー上のアカウントにインポートできます。
     success: ファイルは正常にアップロードされ、現在処理中です。しばらくしてから確認してください
     types:
       blocking: ブロックしたアカウントリスト
+      domain_blocking: 非表示にしたドメインリスト
       following: フォロー中のアカウントリスト
       muting: ミュートしたアカウントリスト
     upload: アップロード
@@ -654,7 +664,7 @@ ja:
       one: '1'
       other: "%{count}"
     max_uses_prompt: 無制限
-    prompt: リンクを生成・共有してこのインスタンスへの新規登録を受け付けることができます
+    prompt: リンクを生成・共有してこのサーバーへの新規登録を受け付けることができます
     table:
       expires_at: 有効期限
       uses: 使用
@@ -801,8 +811,9 @@ ja:
     development: 開発
     edit_profile: プロフィールを編集
     export: データのエクスポート
+    featured_tags: 注目のハッシュタグ
     flavours: フレーバー
-    followers: 信頼済みのインスタンス
+    followers: 信頼済みのサーバー
     import: データのインポート
     migrate: アカウントの引っ越し
     notifications: 通知
@@ -980,13 +991,13 @@ ja:
       final_action: 始めましょう
       final_step: 'さあ始めましょう！ たとえフォロワーがいなくても、あなたの公開した投稿はローカルタイムラインやハッシュタグなどで誰かの目に止まるかもしれません。自己紹介をしたい時は #introductions ハッシュタグを使うといいかもしれません。'
       full_handle: あなたの正式なユーザー名
-      full_handle_hint: これは別のインスタンスからフォローしてもらったりメッセージのやり取りをする際に、友達に伝えるといいでしょう。
+      full_handle_hint: これは別のサーバーからフォローしてもらったりメッセージのやり取りをする際に、友達に伝えるといいでしょう。
       review_preferences_action: 設定の変更
       review_preferences_step: 受け取りたいメールや投稿の公開範囲などの設定を必ず行ってください。不快でないならアニメーション GIF の自動再生を有効にすることもできます。
       subject: Mastodon へようこそ
-      tip_federated_timeline: 連合タイムラインは Mastodon ネットワークの流れを見られるものです。ただしあなたと同じインスタンスの人がフォローしている人だけが含まれるので、それが全てではありません。
-      tip_following: 標準では自動でインスタンスの管理者をフォローしています。もっと興味のある人たちを見つけるには、ローカルタイムラインと連合タイムラインを確認してください。
-      tip_local_timeline: ローカルタイムラインは %{instance} にいる人々の流れを見られるものです。彼らはあなたと同じインスタンスにいる隣人のようなものです！
+      tip_federated_timeline: 連合タイムラインは Mastodon ネットワークの流れを見られるものです。ただしあなたと同じサーバーの人がフォローしている人だけが含まれるので、それが全てではありません。
+      tip_following: 標準では自動でサーバーの管理者をフォローしています。もっと興味のある人たちを見つけるには、ローカルタイムラインと連合タイムラインを確認してください。
+      tip_local_timeline: ローカルタイムラインは %{instance} にいる人々の流れを見られるものです。彼らはあなたと同じサーバーにいる隣人のようなものです！
       tip_mobile_webapp: もしモバイル端末のブラウザで Mastodon をホーム画面に追加できる場合、プッシュ通知を受け取ることができます。それはまるでネイティブアプリのように動作します！
       tips: 豆知識
       title: ようこそ、%{name} ！
diff --git a/config/locales/pl.yml b/config/locales/pl.yml
index 23fa10179..1567ac626 100644
--- a/config/locales/pl.yml
+++ b/config/locales/pl.yml
@@ -602,6 +602,10 @@ pl:
     lists: Listy
     mutes: Wyciszeni
     storage: Urządzenie przechowujące dane
+  featured_tags:
+    add_new: Dodaj nowy
+    errors:
+      limit: Już przekroczyłeś(-aś) maksymalną liczbę wyróżnionych hashtagów
   filters:
     contexts:
       home: Strona główna
@@ -647,10 +651,16 @@ pl:
       one: Coś jest wciąż nie tak! Przyjrzyj się poniższemu błędowi
       other: Coś jest wciąż nie tak! Przejrzyj poniższe błędy (%{count})
   imports:
+    modes:
+      merge: Połącz
+      merge_long: Zachowaj obecne wpisy i dodaj nowe
+      overwrite: Nadpisz
+      overwrite_long: Zastąp obecne wpisy nowymi
     preface: Możesz zaimportować pewne dane (np. lista kont, które śledzisz lub blokujesz) do swojego konta na tym serwerze, korzystając z danych wyeksportowanych z innego serwera.
     success: Twoje dane zostały załadowane i zostaną niebawem przetworzone
     types:
       blocking: Lista blokowanych
+      domain_blocking: Lista zablokowanych domen
       following: Lista śledzonych
       muting: Lista wyciszonych
     upload: Załaduj
@@ -826,6 +836,7 @@ pl:
     development: Tworzenie aplikacji
     edit_profile: Edytuj profil
     export: Eksportowanie danych
+    featured_tags: Wyróżnione hashtagi
     flavours: Odmiany
     followers: Autoryzowani śledzący
     import: Importowanie danych
diff --git a/config/locales/simple_form.en.yml b/config/locales/simple_form.en.yml
index 674abff63..ad9ae7417 100644
--- a/config/locales/simple_form.en.yml
+++ b/config/locales/simple_form.en.yml
@@ -37,8 +37,10 @@ en:
         setting_skin: Reskins the selected Mastodon flavour
         username: Your username will be unique on %{domain}
         whole_word: When the keyword or phrase is alphanumeric only, it will only be applied if it matches the whole word
+      featured_tag:
+        name: 'You might want to use one of these:'
       imports:
-        data: CSV file exported from another Mastodon instance
+        data: CSV file exported from another Mastodon server
       sessions:
         otp: 'Enter the two-factor code generated by your phone app or use one of your recovery codes:'
       user:
@@ -112,6 +114,8 @@ en:
         username: Username
         username_or_email: Username or Email
         whole_word: Whole word
+      featured_tag:
+        name: Hashtag
       interactions:
         must_be_follower: Block notifications from non-followers
         must_be_following: Block notifications from people you don't follow
diff --git a/config/locales/simple_form.ja.yml b/config/locales/simple_form.ja.yml
index 9419331e4..2cade4301 100644
--- a/config/locales/simple_form.ja.yml
+++ b/config/locales/simple_form.ja.yml
@@ -33,11 +33,14 @@ ja:
         setting_display_media_show_all: 閲覧注意としてマークされたメディアも常に表示する
         setting_hide_network: フォローとフォロワーの情報がプロフィールページで見られないようにします
         setting_noindex: 公開プロフィールおよび各投稿ページに影響します
+        setting_show_application: トゥートするのに使用したアプリがトゥートの詳細ビューに表示されるようになります
         setting_theme: ログインしている全てのデバイスで適用されるデザインです。
         username: あなたのユーザー名は %{domain} の中で重複していない必要があります
         whole_word: キーワードまたはフレーズが英数字のみの場合、単語全体と一致する場合のみ適用されるようになります
+      featured_tag:
+        name: 'これらを使うといいかもしれません:'
       imports:
-        data: 他の Mastodon インスタンスからエクスポートしたCSVファイルを選択して下さい
+        data: 他の Mastodon サーバーからエクスポートしたCSVファイルを選択して下さい
       sessions:
         otp: '携帯電話のアプリで生成された二段階認証コードを入力するか、リカバリーコードを使用してください:'
       user:
@@ -101,6 +104,7 @@ ja:
         setting_hide_network: 繋がりを隠す
         setting_noindex: 検索エンジンによるインデックスを拒否する
         setting_reduce_motion: アニメーションの動きを減らす
+        setting_show_application: トゥートの送信に使用したアプリを開示する
         setting_system_font_ui: システムのデフォルトフォントを使う
         setting_theme: サイトテーマ
         setting_unfollow_modal: フォローを解除する前に確認ダイアログを表示する
@@ -109,6 +113,8 @@ ja:
         username: ユーザー名
         username_or_email: ユーザー名またはメールアドレス
         whole_word: 単語全体にマッチ
+      featured_tag:
+        name: ハッシュタグ
       interactions:
         must_be_follower: フォロワー以外からの通知をブロック
         must_be_following: フォローしていないユーザーからの通知をブロック
diff --git a/config/locales/simple_form.pl.yml b/config/locales/simple_form.pl.yml
index 660841e06..f5b5a6ca5 100644
--- a/config/locales/simple_form.pl.yml
+++ b/config/locales/simple_form.pl.yml
@@ -33,9 +33,12 @@ pl:
         setting_display_media_show_all: Zawsze pokazuj zawartość multimedialną jako wrażliwą
         setting_hide_network: Informacje o tym, kto Cię śledzi i kogo śledzisz nie będą widoczne
         setting_noindex: Wpływa na widoczność strony profilu i Twoich wpisów
+        setting_show_application: W informacjach o wpisie będzie widoczna informacja o aplikacji, z której został wysłany
         setting_skin: Zmienia wygląd używanej odmiany Mastodona
         username: Twoja nazwa użytkownika będzie niepowtarzalna na %{domain}
         whole_word: Jeśli słowo lub fraza składa się jedynie z liter lub cyfr, filtr będzie zastosowany tylko do pełnych wystąpień
+      featured_tag:
+        name: 'Sugerujemy użycie jednego z następujących:'
       imports:
         data: Plik CSV wyeksportowany z innej instancji Mastodona
       sessions:
@@ -102,6 +105,7 @@ pl:
         setting_hide_network: Ukryj swoją sieć
         setting_noindex: Nie indeksuj mojego profilu w wyszukiwarkach internetowych
         setting_reduce_motion: Ogranicz ruch w animacjach
+        setting_show_application: Informuj o aplikacji z której wysłano wpisy
         setting_skin: Motyw
         setting_system_font_ui: Używaj domyślnej czcionki systemu
         setting_unfollow_modal: Pytaj o potwierdzenie przed cofnięciem śledzenia
@@ -110,6 +114,8 @@ pl:
         username: Nazwa użytkownika
         username_or_email: Nazwa użytkownika lub adres e-mail
         whole_word: Całe słowo
+      featured_tag:
+        name: Hashtag
       interactions:
         must_be_follower: Nie wyświetlaj powiadomień od osób, które Cię nie śledzą
         must_be_following: Nie wyświetlaj powiadomień od osób, których nie śledzisz
diff --git a/config/navigation.rb b/config/navigation.rb
index 5b0b5c343..f74c98ab2 100644
--- a/config/navigation.rb
+++ b/config/navigation.rb
@@ -6,6 +6,7 @@ SimpleNavigation::Configuration.run do |navigation|
 
     primary.item :settings, safe_join([fa_icon('cog fw'), t('settings.settings')]), settings_profile_url do |settings|
       settings.item :profile, safe_join([fa_icon('user fw'), t('settings.edit_profile')]), settings_profile_url, highlights_on: %r{/settings/profile|/settings/migration}
+      settings.item :featured_tags, safe_join([fa_icon('hashtag fw'), t('settings.featured_tags')]), settings_featured_tags_url
       settings.item :preferences, safe_join([fa_icon('sliders fw'), t('settings.preferences')]), settings_preferences_url
       settings.item :notifications, safe_join([fa_icon('bell fw'), t('settings.notifications')]), settings_notifications_url
       settings.item :password, safe_join([fa_icon('lock fw'), t('auth.security')]), edit_user_registration_url, highlights_on: %r{/auth/edit|/settings/delete}
diff --git a/config/routes.rb b/config/routes.rb
index 976b25812..447a22794 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -74,6 +74,7 @@ Rails.application.routes.draw do
   get '/@:username', to: 'accounts#show', as: :short_account
   get '/@:username/with_replies', to: 'accounts#show', as: :short_account_with_replies
   get '/@:username/media', to: 'accounts#show', as: :short_account_media
+  get '/@:username/tagged/:tag', to: 'accounts#show', as: :short_account_tag
   get '/@:account_username/:id', to: 'statuses#show', as: :short_account_status
   get '/@:account_username/:id/embed', to: 'statuses#embed', as: :embed_short_account_status
 
@@ -119,6 +120,7 @@ Rails.application.routes.draw do
     resource :migration, only: [:show, :update]
 
     resources :sessions, only: [:destroy]
+    resources :featured_tags, only: [:index, :create, :destroy]
   end
 
   resources :media, only: [:show] do
diff --git a/db/migrate/20171005102658_create_account_moderation_notes.rb b/db/migrate/20171005102658_create_account_moderation_notes.rb
index d1802b5b3..974ed9940 100644
--- a/db/migrate/20171005102658_create_account_moderation_notes.rb
+++ b/db/migrate/20171005102658_create_account_moderation_notes.rb
@@ -7,6 +7,7 @@ class CreateAccountModerationNotes < ActiveRecord::Migration[5.1]
 
       t.timestamps
     end
+
     add_foreign_key :account_moderation_notes, :accounts, column: :target_account_id
   end
 end
diff --git a/db/migrate/20190201012802_add_overwrite_to_imports.rb b/db/migrate/20190201012802_add_overwrite_to_imports.rb
new file mode 100644
index 000000000..89b262cc7
--- /dev/null
+++ b/db/migrate/20190201012802_add_overwrite_to_imports.rb
@@ -0,0 +1,17 @@
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class AddOverwriteToImports < ActiveRecord::Migration[5.2]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    safety_assured do
+      add_column_with_default :imports, :overwrite, :boolean, default: false, allow_null: false
+    end
+  end
+
+  def down
+    remove_column :imports, :overwrite, :boolean
+  end
+end
diff --git a/db/migrate/20190203180359_create_featured_tags.rb b/db/migrate/20190203180359_create_featured_tags.rb
new file mode 100644
index 000000000..b08410a3a
--- /dev/null
+++ b/db/migrate/20190203180359_create_featured_tags.rb
@@ -0,0 +1,12 @@
+class CreateFeaturedTags < ActiveRecord::Migration[5.2]
+  def change
+    create_table :featured_tags do |t|
+      t.references :account, foreign_key: { on_delete: :cascade }
+      t.references :tag, foreign_key: { on_delete: :cascade }
+      t.bigint :statuses_count, default: 0, null: false
+      t.datetime :last_status_at
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index c6c94609f..05d4deb1a 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_01_17_114553) do
+ActiveRecord::Schema.define(version: 2019_02_03_180359) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -260,6 +260,17 @@ ActiveRecord::Schema.define(version: 2019_01_17_114553) do
     t.index ["status_id"], name: "index_favourites_on_status_id"
   end
 
+  create_table "featured_tags", force: :cascade do |t|
+    t.bigint "account_id"
+    t.bigint "tag_id"
+    t.bigint "statuses_count", default: 0, null: false
+    t.datetime "last_status_at"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["account_id"], name: "index_featured_tags_on_account_id"
+    t.index ["tag_id"], name: "index_featured_tags_on_tag_id"
+  end
+
   create_table "follow_requests", force: :cascade do |t|
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
@@ -300,6 +311,7 @@ ActiveRecord::Schema.define(version: 2019_01_17_114553) do
     t.integer "data_file_size"
     t.datetime "data_updated_at"
     t.bigint "account_id", null: false
+    t.boolean "overwrite", default: false, null: false
   end
 
   create_table "invites", force: :cascade do |t|
@@ -721,6 +733,8 @@ ActiveRecord::Schema.define(version: 2019_01_17_114553) do
   add_foreign_key "custom_filters", "accounts", on_delete: :cascade
   add_foreign_key "favourites", "accounts", name: "fk_5eb6c2b873", on_delete: :cascade
   add_foreign_key "favourites", "statuses", name: "fk_b0e856845e", on_delete: :cascade
+  add_foreign_key "featured_tags", "accounts", on_delete: :cascade
+  add_foreign_key "featured_tags", "tags", on_delete: :cascade
   add_foreign_key "follow_requests", "accounts", column: "target_account_id", name: "fk_9291ec025d", on_delete: :cascade
   add_foreign_key "follow_requests", "accounts", name: "fk_76d644b0e7", on_delete: :cascade
   add_foreign_key "follows", "accounts", column: "target_account_id", name: "fk_745ca29eac", on_delete: :cascade
diff --git a/spec/fabricators/featured_tag_fabricator.rb b/spec/fabricators/featured_tag_fabricator.rb
new file mode 100644
index 000000000..25cbdaac0
--- /dev/null
+++ b/spec/fabricators/featured_tag_fabricator.rb
@@ -0,0 +1,6 @@
+Fabricator(:featured_tag) do
+  account
+  tag
+  statuses_count 1_337
+  last_status_at Time.now.utc
+end
diff --git a/spec/lib/formatter_spec.rb b/spec/lib/formatter_spec.rb
index 0c1efe7c3..96d2fc7e0 100644
--- a/spec/lib/formatter_spec.rb
+++ b/spec/lib/formatter_spec.rb
@@ -74,10 +74,36 @@ RSpec.describe Formatter do
     end
 
     context 'given a URL with a query string' do
-      let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink' }
+      context 'with escaped unicode character' do
+        let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=autolink' }
 
-      it 'matches the full URL' do
-        is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;q=autolink"'
+        it 'matches the full URL' do
+          is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;q=autolink"'
+        end
+      end
+
+      context 'with unicode character' do
+        let(:text) { 'https://www.ruby-toolbox.com/search?utf8=✓&q=autolink' }
+
+        it 'matches the full URL' do
+          is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=✓&amp;q=autolink"'
+        end
+      end
+
+      context 'with unicode character at the end' do
+        let(:text) { 'https://www.ruby-toolbox.com/search?utf8=✓' }
+
+        it 'matches the full URL' do
+          is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=✓"'
+        end
+      end
+
+      context 'with escaped and not escaped unicode characters' do
+        let(:text) { 'https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&utf81=✓&q=autolink' }
+
+        it 'preserves escaped unicode characters' do
+          is_expected.to include 'href="https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&amp;utf81=✓&amp;q=autolink"'
+        end
       end
     end
 
@@ -89,6 +115,22 @@ RSpec.describe Formatter do
       end
     end
 
+    context 'given a URL in quotation marks' do
+      let(:text) { '"https://example.com/"' }
+
+      it 'does not match the quotation marks' do
+        is_expected.to include 'href="https://example.com/"'
+      end
+    end
+
+    context 'given a URL in angle brackets' do
+      let(:text) { '<https://example.com/>' }
+
+      it 'does not match the angle brackets' do
+        is_expected.to include 'href="https://example.com/"'
+      end
+    end
+
     context 'given a URL with Japanese path string' do
       let(:text) { 'https://ja.wikipedia.org/wiki/日本' }
 
@@ -105,6 +147,22 @@ RSpec.describe Formatter do
       end
     end
 
+    context 'given a URL with a full-width space' do
+      let(:text) { 'https://example.com/　abc123' }
+
+      it 'does not match the full-width space' do
+        is_expected.to include 'href="https://example.com/"'
+      end
+    end
+
+    context 'given a URL in Japanese quotation marks' do
+      let(:text) { '「[https://example.org/」' }
+
+      it 'does not match the quotation marks' do
+        is_expected.to include 'href="https://example.org/"'
+      end
+    end
+
     context 'given a URL with Simplified Chinese path string' do
       let(:text) { 'https://baike.baidu.com/item/中华人民共和国' }
 
@@ -124,7 +182,11 @@ RSpec.describe Formatter do
     context 'given a URL containing unsafe code (XSS attack, visible part)' do
       let(:text) { %q{http://example.com/b<del>b</del>} }
 
-      it 'escapes the HTML in the URL' do
+      it 'does not include the HTML in the URL' do
+        is_expected.to include '"http://example.com/b"'
+      end
+
+      it 'escapes the HTML' do
         is_expected.to include '&lt;del&gt;b&lt;/del&gt;'
       end
     end
@@ -132,7 +194,11 @@ RSpec.describe Formatter do
     context 'given a URL containing unsafe code (XSS attack, invisible part)' do
       let(:text) { %q{http://example.com/blahblahblahblah/a<script>alert("Hello")</script>} }
 
-      it 'escapes the HTML in the URL' do
+      it 'does not include the HTML in the URL' do
+        is_expected.to include '"http://example.com/blahblahblahblah/a"'
+      end
+
+      it 'escapes the HTML' do
         is_expected.to include '&lt;script&gt;alert(&quot;Hello&quot;)&lt;/script&gt;'
       end
     end
@@ -168,6 +234,14 @@ RSpec.describe Formatter do
         is_expected.to include '/tags/hashtag" class="mention hashtag" rel="tag">#<span>hashtag</span></a>'
       end
     end
+
+    context 'given text containing a hashtag with Unicode chars' do
+      let(:text)  { '#hashtagタグ' }
+
+      it 'creates a hashtag link' do
+        is_expected.to include '/tags/hashtag%E3%82%BF%E3%82%B0" class="mention hashtag" rel="tag">#<span>hashtagタグ</span></a>'
+      end
+    end
   end
 
   describe '#format_spoiler' do
diff --git a/spec/models/concerns/account_interactions_spec.rb b/spec/models/concerns/account_interactions_spec.rb
index 9c9b87daf..36e346f14 100644
--- a/spec/models/concerns/account_interactions_spec.rb
+++ b/spec/models/concerns/account_interactions_spec.rb
@@ -244,9 +244,9 @@ describe AccountInteractions do
   end
 
   describe '#block_domain!' do
-    let(:domain_block) { Fabricate(:domain_block) }
+    let(:domain) { 'example.com' }
 
-    subject { account.block_domain!(domain_block) }
+    subject { account.block_domain!(domain) }
 
     it 'creates and returns AccountDomainBlock' do
       expect do
diff --git a/spec/models/featured_tag_spec.rb b/spec/models/featured_tag_spec.rb
new file mode 100644
index 000000000..07533e0b9
--- /dev/null
+++ b/spec/models/featured_tag_spec.rb
@@ -0,0 +1,4 @@
+require 'rails_helper'
+
+RSpec.describe FeaturedTag, type: :model do
+end