Fix a bug if you have no roles at all
This could not happen currently, but might happen later on if a group
is defined that does not have an 'anybody' membership.
Patch by: Sverre Rabbelier
from django.contrib.gis.sitemaps import GeoRSSSitemap, KMLSitemap, KMZSitemap
from models import City, Country
from feeds import feed_dict
sitemaps = {'kml' : KMLSitemap([City, Country]),
'kmz' : KMZSitemap([City, Country]),
'georss' : GeoRSSSitemap(feed_dict),
}