public ActionResult Login(LoginModel model)
 {
     if (string.IsNullOrEmpty(model.Email) || string.IsNullOrEmpty(model.Password))
     {
         return View(model);
     }
     SimpleSessionPersister.Username = model.Email;
     return RedirectToAction("Index","Profile");
 }
 public ActionResult Registration(LoginModel model)
 {
     repository.Save(model);
     return RedirectToAction("Index");
 }