public ActionResult DeleteUser(RegisterViewModel model)
        {
            if (ManageRoles.IsUserInRole(model.Email, App_Role.Users))
            {
                ManageRoles.RemoveUserFromRole(model.Email, App_Role.Users);
            }
            if (ManageRoles.IsUserInRole(model.Email, App_Role.SuperUsers))
            {
                ManageRoles.RemoveUserFromRole(model.Email, App_Role.SuperUsers);
            }

            ApplicationUser user = UserManager.FindByEmail(model.Email);
            IdentityResult  ir   = UserManager.Delete(user);

            TempData["DeletedUser"] = model.Email;
            if (ir.Succeeded)
            {
                TempData["DeletedText"] = " has been deleted.";
            }
            else
            {
                TempData["DeletedText"] = " could not be deleted.";
            }
            return(RedirectToAction("UserDeleted", "Security"));
        }