[1.5.x] Fixed #19597 - Added some notes on jQuery in admin.
[1.5.x] Fixed #19597 - Added some notes on jQuery in admin.

Thanks Daniele Procida.

Backport of d406afe12e from master

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