[1.5.x] Fixed #20860 -- Removed references to defunct chicagocrime.org
[1.5.x] Fixed #20860 -- Removed references to defunct chicagocrime.org

Backport of 1593a86494 from master

imtapps/django-imt-fork,ccn-2m/django,ccn-2m/django,bliti/django-nonrel-1.5,imtapps/django-imt-fork,hasadna/django,imtapps/django-imt-fork,ccn-2m/django,ccn-2m/django,hasadna/django,bliti/django-nonrel-1.5,bliti/django-nonrel-1.5,hasadna/django