Fix unfollows not clearing reblogs, fix blocks not clearing reblogs and notifications,

skip ActionCable for follow/unfollow/block events, instead clear UI from
blocked account's posts instantly if block request succeeds. Add forgotten
i18n for sensitive content

app/services/unfollow_service.rb

@@ -17,9 +17,8 @@ class UnfollowService < BaseService
 
     from_account.statuses.select('id').find_each do |status|
       redis.zrem(timeline_key, status.id)
+      redis.zremrangebyscore(timeline_key, status.id, status.id)
     end
-
-    FeedManager.instance.broadcast(into_account.id, type: 'unmerge')
   end
 
   def redis