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

Conflicts:
- app/controllers/directories_controller.rb
- app/controllers/settings/applications_controller.rb
- app/controllers/settings/base_controller.rb
- app/controllers/settings/deletes_controller.rb
- app/controllers/settings/exports_controller.rb
- app/controllers/settings/follower_domains_controller.rb
- app/controllers/settings/imports_controller.rb
- app/controllers/settings/migrations_controller.rb
- app/controllers/settings/notifications_controller.rb
- app/controllers/settings/preferences_controller.rb
- app/controllers/settings/sessions_controller.rb
- app/controllers/settings/two_factor_authentication/confirmations_controller.rb
- app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb
- app/controllers/settings/two_factor_authentications_controller.rb

Conflicts were due to some refactoring already made in glitch-soc
when introducing flavours.

app/controllers/admin/settings_controller.rb

@@ -28,6 +28,7 @@ module Admin
       show_known_fediverse_at_about_page
       preview_sensitive_media
       custom_css
+      profile_directory
     ).freeze
 
     BOOLEAN_SETTINGS = %w(
@@ -39,6 +40,7 @@ module Admin
       peers_api_enabled
       show_known_fediverse_at_about_page
       preview_sensitive_media
+      profile_directory
     ).freeze
 
     UPLOAD_SETTINGS = %w(