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

Conflicts:
- app/controllers/directories_controller.rb
- package.json
- yarn.lock

app/controllers/about_controller.rb

@@ -4,6 +4,7 @@ class AboutController < ApplicationController
   before_action :set_pack
   layout 'public'
 
+  before_action :require_open_federation!, only: [:show, :more]
   before_action :set_body_classes, only: :show
   before_action :set_instance_presenter
   before_action :set_expires_in
@@ -20,6 +21,10 @@ class AboutController < ApplicationController
 
   private
 
+  def require_open_federation!
+    not_found if whitelist_mode?
+  end
+
   def new_user
     User.new.tap do |user|
       user.build_account