public ActionResult Delete(Papel papel)
        {
            Papel p = InternoRoleManager.FindById(papel.Id);

            if (p != null)
            {
                IdentityResult resultado = InternoRoleManager.Delete(p);

                if (resultado.Succeeded)
                {
                    return(RedirectToAction("Index"));
                }

                else
                {
                    return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
                }
            }

            else
            {
                return(HttpNotFound());
            }
        }