Merge remote-tracking branch 'origin/master' into merge-upstream

Conflicts:
 	README.md
 	app/controllers/follower_accounts_controller.rb
 	app/controllers/following_accounts_controller.rb
 	app/serializers/rest/instance_serializer.rb
 	app/views/stream_entries/_simple_status.html.haml
 	config/locales/simple_form.ja.yml

config/environments/production.rb

@@ -25,7 +25,7 @@ Rails.application.configure do
   end
 
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor = Uglifier.new(mangle: false)
+  # config.assets.js_compressor = Uglifier.new(mangle: false)
   # config.assets.css_compressor = :sass
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.