give some love to the waiter app

config/routes.rb

@@ -41,11 +41,12 @@ Qwaiter::Application.routes.draw do
   #WAITER
   #get '/waiter' => 'waiter#index' #, controller: 'waiter', action: 'index'
   #get '/waiter/sections' => 'waiter#sections'
-  get '/waiter/product_categories' => 'waiter#product_categories'
+  #get '/waiter/product_categories' => 'waiter#product_categories'
   post '/waiter/order_products' => 'waiter#order_products', as: :order_products_waiter
   namespace :waiter do
     resources :sections
     resources :suppliers
+    resources :product_categories, only: %i[index]
 
     root to: 'dashboard#index'
     get '/*rest' => redirect('/waiter') # Ember app refresh