Merge remote-tracking branch 'origin/master' into gs-master

Conflicts:
 	app/controllers/follower_accounts_controller.rb
 	app/controllers/following_accounts_controller.rb
    	db/schema.rb

app/serializers/activitypub/follow_serializer.rb

@@ -5,7 +5,7 @@ class ActivityPub::FollowSerializer < ActiveModel::Serializer
   attribute :virtual_object, key: :object
 
   def id
-    [ActivityPub::TagManager.instance.uri_for(object.account), '#follows/', object.id].join
+    ActivityPub::TagManager.instance.uri_for(object)
   end
 
   def type