Fixed sorter method on TqlResponse

    def sorted(self, tag, reverse=False):

        """ Return a new TqlResponse with objects sorted by provided tag.

        """

        sorter = lambda obj: None if obj.object.get(tag) is None else obj.object.get(tag).value

        self.fetch(tag)

        sorter = lambda obj: obj.get(tag) if tag in obj else lambda obj: None

        objects = tuple(sorted(self._objects.itervalues(), key=sorter, reverse=reverse))

        for obj in objects:

            obj.show.add(tag)