public ActionResult LogIn(Models.LoginModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                if (SecurityProvider.UserCredentialsAreValid(model.UserName, model.Password))
                {
                    SecurityProvider.CreateSecuritySession(model.UserName, model.RememberMe);

                    return(RedirectToLocal(returnUrl));
                }
            }

            return(View(model));
        }