Added endpoint for site JSON

Removed unneeded code

app/controllers/site_controller.rb

@@ -0,0 +1,10 @@
+require_dependency 'site_serializer'
+
+class SiteController < ApplicationController
+
+  def index      
+    @site = Site.new(guardian)
+    render_serialized(@site, SiteSerializer)
+  end
+    
+end

config/routes.rb

@@ -14,6 +14,8 @@ Discourse::Application.routes.draw do
   match "/404", to: "exceptions#not_found", via: [:get, :post]
 
   mount Sidekiq::Web => "/sidekiq", constraints: AdminConstraint.new
+  
+  get "site" => "site#index"
 
   resources :forums
   get "srv/status" => "forums#status"