message: fixed some date stuff
diff: @@ -11,6 +11,8 @@ export const DateValueConverter: ValueConverter<Date> = {
  toJson: (val: Date) => {
  if (!val)
  return '';
  + if (typeof (val) === "string")
  + val = new Date(val);
  if (val instanceof Date) {
  return val.toISOString();
  }
  