message: show error when role update fails
diff: @@ -53,6 +53,7 @@ export class UserAdminComponent implements OnInit {
  },
  (error) => {
  this.showProgress.toggleLoadingGlobal(false);
  + this.snackBar.open(error.json().message, 'Desmiss', {duration: 3000})
  }
  );
  }
  