clear filter cache when regenerating feeds

lib/tasks/monsterfork.rake

@@ -5,6 +5,7 @@ namespace :monsterfork do
   task reapply_filters: :environment do
     Account.local.find_each do |account|
       Rails.logger.info("Re-applying filters for: #{account.username}")
+      Redis.current.del("filtered_statuses:#{account.id}")
       FilterFeedsWorker.perform_async(account.id)
       sleep 1
       while Sidekiq::Queue.new.size > 5