[1.5.x] Fixed #20609 -- Documented how to use request.user with RequestFactory
[1.5.x] Fixed #20609 -- Documented how to use request.user with RequestFactory

Thanks michel@ for the suggestion.

Backport of 75041d5ea3 from stable/1.5.x.

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