One more helper to django utils.
This method is use by a lot of django-users, and is always re coded for every one, this can help a lot of developers.
one more helper to django utils .
Every Django application replicates this boilerplate at some point.
This is less complete than the patch currently available on https://code.djangoproject.com/ticket/17061
Fixed #557 -- Added "Download Donor Report" admin action.