Сompatibility for django-grappelli

[Apkawa]

django-grappelli.readthedocs.org/en/latest/

[LilyFirefly]

I'm happy with this in principle, but I don't know javascript well enough to review. I'd also like some automated tests so we can make sure this continues to work correctly for both standard django and django with grappelli.

@meshy Any thoughts?

[meshy]

@Apkawa thanks for this!

@Ian-Foote I think that front-end tests are a good plan too -- this project is probably a good candidate for selenium or similar.

[maxpeterson]

Not really sure why this was never merged?

[LilyFirefly]

Probably because the tests for it never happened.