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

app/serializers/initial_state_serializer.rb

@@ -22,6 +22,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       locale: I18n.locale,
       domain: Rails.configuration.x.local_domain,
       admin: object.admin&.id&.to_s,
+      search_enabled: Chewy.enabled?,
     }
 
     if object.current_account