public ActionResult List()
        {
            var user = Membership.GetUser();
            if (user == null)
            {
                return RedirectToAction("Create", "Account");
            }

            string email = user.UserName;
            AccountLogic accountLogic = new AccountLogic();
            AccountViewModel accountVM = accountLogic.GetByEmail(email);

            if (accountVM != null)
            {
                ListingLogic listingLogic = new ListingLogic();
                IEnumerable<ListingViewModel> listings = listingLogic.GetListingByClientGuid(accountVM.ClientGuid);
                return View(listings);
            }
            else
            {
                return RedirectToAction("Create", "Account");
            }
        }