public ActionResult DeleteUser(DeleteUserViewModel model)
 {
     if (User.Identity.IsAuthenticated && User.IsInRole("Admin"))
     {
         if (!ModelState.IsValid)
         {
             return(View(model));
         }
         SiteUserManager.DeleteSiteUser(model.Id, Server);
         return(RedirectToAction("Users", "Admin"));
     }
     return(RedirectToAction("Index", "Home"));
 }