Direct messages column (#4514)

* Added a timeline for Direct statuses
* Lists all Direct statuses you've sent and received
* Displayed in Getting Started
* Streaming server support for direct TL

* Changes to match other timelines in 2.0

app/services/remove_status_service.rb

@@ -20,6 +20,7 @@ class RemoveStatusService < BaseService
     remove_reblogs
     remove_from_hashtags
     remove_from_public
+    remove_from_direct if status.direct_visibility?
 
     @status.destroy!
 
@@ -130,6 +131,13 @@ class RemoveStatusService < BaseService
     Redis.current.publish('timeline:public:local', @payload) if @status.local?
   end
 
+  def remove_from_direct
+    @mentions.each do |mention|
+      Redis.current.publish("timeline:direct:#{mention.account.id}", @payload) if mention.account.local?
+    end
+    Redis.current.publish("timeline:direct:#{@account.id}", @payload) if @account.local?
+  end
+
   def redis
     Redis.current
   end