Move unsubscribes to root

Otherwise conflits will occur while merging with CE

app/mailers/emails/admin_notification.rb

@@ -2,7 +2,7 @@ module Emails
   module AdminNotification
     def send_admin_notification(user_id, subject, body)
       email = recipient(user_id)
-      @unsubscribe_url = public_unsubscribe_url(email: email)
+      @unsubscribe_url = unsubscribe_url(email: email)
       @body = body
       mail to: email, subject: subject
     end

app/views/public/unsubscribes/show.html.haml → app/views/unsubscribes/show.html.haml

 %h3.page-title Unsubscribe from Admin notifications
 
 %hr
-= form_tag public_unsubscribe_path(@email) do
+= form_tag unsubscribe_path(@email) do
   %p
     Yes, I want to unsubscribe
     %strong= @email

config/routes.rb

@@ -52,8 +52,6 @@ Gitlab::Application.routes.draw do
   #
   namespace :public do
     resources :projects, only: [:index]
-    get  'unsubscribes/:email', to: 'unsubscribes#show', as: :unsubscribe
-    post 'unsubscribes/:email', to: 'unsubscribes#create'
     root to: "projects#index"
   end
 
@@ -176,6 +174,8 @@ Gitlab::Application.routes.draw do
     end
   end
 
+  get  'unsubscribes/:email', to: 'unsubscribes#show', as: :unsubscribe
+  post 'unsubscribes/:email', to: 'unsubscribes#create'
   resources :projects, constraints: { id: /[^\/]+/ }, only: [:new, :create]
 
   devise_for :users, controllers: { omniauth_callbacks: :omniauth_callbacks, registrations: :registrations , passwords: :passwords, sessions: :sessions }