Support Django 2.0

[Matthäus G. Chajdas]

Django 2.0 breaks if user.is_authenticated(): (utils.py, line 74), which needs to become if user.is_authenticated: -- this should also work from Django 1.10 onwards, see: https://docs.djangoproject.com/en/2.0/releases/1.10/#using-user-is-authenticated-and-user-is-anonymous-as-methods

[Peter Bittner]

Would you mind to prepare a PR?

[Matthäus G. Chajdas]

PR added.

[Matthäus G. Chajdas]

Guess this can be closed then, given the PR has been merged. Hope you'll push out a release soon :)

[Peter Bittner]

Thanks @Anteru!