public ActionResult AddFavorite(int Id)
        {
            var userManager = new UserManager();
            var favoriteManager = new FavoriteManager();

            var favorite = new Favorite();
            var login = System.Web.HttpContext.Current.User.Identity.Name;

            favorite.Restaurant = _rstManager.Get(Id);
            favorite.User = userManager.Get().FirstOrDefault(u => u.Login == login);
            favoriteManager.Add(favorite);
            return Json(new {result = "success"}, JsonRequestBehavior.AllowGet);
        }
        public ActionResult RemoveFavorite(Favorite item)
        {
            var fvrManager = new FavoriteManager();
            var user = GetUserByLogin();

            fvrManager.Delete(item.Id, user.Id);

            return View();
        }