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/directories_controller.rb

@@ -3,6 +3,7 @@
 class DirectoriesController < ApplicationController
   layout 'public'
 
+  before_action :check_enabled
   before_action :set_instance_presenter
   before_action :set_tag, only: :show
   before_action :set_tags
@@ -23,6 +24,10 @@ class DirectoriesController < ApplicationController
     use_pack 'share'
   end
 
+  def check_enabled
+    return not_found unless Setting.profile_directory
+  end
+
   def set_tag
     @tag = Tag.discoverable.find_by!(name: params[:id].downcase)
   end