Port the CSV admin mixin to Django 1.5? It used to work in the past, cannot seem to understand why I needed to do this patch *now* and how it worked before. This makes `base.User` and `landing.LandingUser` admin pages work again.
Port the CSV admin mixin to Django 1.5? It used to work in the past, cannot seem to understand why I needed to do this patch *now* and how it worked before. This makes `base.User` and `landing.LandingUser` admin pages work again.

WillianPaiva/1flow,WillianPaiva/1flow,1flow/1flow,WillianPaiva/1flow,WillianPaiva/1flow,WillianPaiva/1flow,1flow/1flow,1flow/1flow,1flow/1flow,1flow/1flow