'Verifies that current URL contains `expected`.'

@keyword
def location_should_contain(self, expected):

    actual = self.get_location()
    if (expected not in actual):
        raise AssertionError(("Location    should    have    contained    '%s'    but    it    was    '%s'." % (expected, actual)))
    self.info(("Current    location    contains    '%s'." % expected))
