Add responsive panels to the single-column layout (#10820)

* Add responsive panels to the single-column layout

* Fixes

* Fix not being able to save the preference

* Fix code style issues

* Set max-height on the compose textarea and add a link to relationship manager

app/controllers/settings/preferences_controller.rb

@@ -49,6 +49,7 @@ class Settings::PreferencesController < Settings::BaseController
       :setting_hide_network,
       :setting_aggregate_reblogs,
       :setting_show_application,
+      :setting_advanced_layout,
       notification_emails: %i(follow follow_request reblog favourite mention digest report pending_account),
       interactions: %i(must_be_follower must_be_following)
     )