[1.5.x] Fixed #20284 - Added a note about DEBUG in static file docs.
[1.5.x] Fixed #20284 - Added a note about DEBUG in static file docs.

Thanks wim@ for the suggestion and Nicolas Noé for the patch.

Backport of 2c84f4434c from master

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