public ActionResult Update(int userId)
        {
            var model = UsersAndRewardsViewModel.CreateModel(logic.GetUserById(userId), logic.GetRewards());

            return(View("UserPage", model));
        }
        public ActionResult Create()
        {
            var model = UsersAndRewardsViewModel.CreateModel(null, logic.GetRewards());

            return(View("UserPage", model));
        }