'Returns the available options in the cohort dropdown, including the initial "Select a cohort".'

def _get_cohort_options(self):

    def check_func():
        'Promise    Check    Function'
        query = self.q(css=self._bounded_selector('#cohort-select    option'))
        return ((len(query) > 0), query)
    return Promise(check_func, 'Waiting    for    cohort    selector    to    populate').fulfill()
