public ActionResult Settings(SettingsViewModel changedUser)
        {
            /*try
            {*/
                if (ModelState.IsValid)
                {
                    changedUser.ActualizarUsuario();
                    return RedirectToAction("Index", "Topologia");

                }
                else
                {
                    return View(changedUser);
                }
            /*}
            catch
            {
                return View(changedUser);
            }*/
        }
 // GET: /Account/Settings
 public ActionResult Settings(string cUsername)
 {
     try {
         string cUsuarioActual = Session["Usuario"].ToString();
         SettingsViewModel changedUser = new SettingsViewModel(cUsuarioActual);
         return View(changedUser);
     }
     catch
     {
         return RedirectToAction("Index", "Home");
     }
 }