WebApp:
   Change RestaurantsController name to RestaurantController
   (same to MobileWebApp, because GetImage function for LocalUrl)
    appropriate changes.
ImageData:
   Add ImageContentType attribute
   Add functionality for updating ContentType then Upload image to restaurant
Show Restaurant Logo from LocalUrl (in backoffice and Mobile application)

ServiceLayerImpl.cs:
   Add GetRestaurantBasicByName function
   Add GetChainRestaurantsBasicByName function