public ActionResult AddConcepto(TrvRepConceptos concepto)
{
concepto.Creadopor = int.Parse(Session["IdUser"].ToString());
concepto.FAlta = DateTime.Now;
concepto.Activo = true;
concepto.IdTrvRepConceptos = 0;
travelHelper.InsertConcepto(concepto);
return(Redirect(Url.Action("TravelDetail", "Travel", new { reqID = concepto.IdTrvReq })));
}