[1.4.X] Fixed #18490 - Updated DateField input formats; thanks dloewenherz for the draft patch.
[1.4.X] Fixed #18490 - Updated DateField input formats; thanks dloewenherz for the draft patch.

Backport of fa8fb2b383 from master

riklaunim/django-custom-multisite,riklaunim/django-custom-multisite,riklaunim/django-custom-multisite