'CLeans up URLs.
Clears out the URL caches, reloads the root urls module, and
re-triggers the autodiscovery mechanism for Horizon. Allows URLs
to be re-calculated after registering new dashboards. Useful
only for testing and should never be used on a live site.'

def _reload_urls(self):

    urlresolvers.clear_url_caches()
    moves.reload_module(import_module(settings.ROOT_URLCONF))
    base.Horizon._urls()
