Change design of federation pages in admin UI (#17704)

* Change design of federation pages in admin UI

* Fix query performance in instance media attachments measure

* Fix reblogs being included in instance languages dimension

config/routes.rb

@@ -191,7 +191,7 @@ Rails.application.routes.draw do
     get '/dashboard', to: 'dashboard#index'
 
     resources :domain_allows, only: [:new, :create, :show, :destroy]
-    resources :domain_blocks, only: [:new, :create, :show, :destroy, :update, :edit]
+    resources :domain_blocks, only: [:new, :create, :destroy, :update, :edit]
 
     resources :email_domain_blocks, only: [:index, :new, :create] do
       collection do