Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- app/views/admin/settings/edit.html.haml:
  Conflict due to how the theming settings change.

app/controllers/api/v1/accounts_controller.rb

@@ -80,6 +80,10 @@ class Api::V1::AccountsController < Api::BaseController
   end
 
   def check_enabled_registrations
-    forbidden if single_user_mode? || !Setting.open_registrations
+    forbidden if single_user_mode? || !allowed_registrations?
+  end
+
+  def allowed_registrations?
+    Setting.registrations_mode != 'none'
   end
 end