Fix test_password_reset for Django 2+
Fix test_password_reset for Django 2+

In Django 2.0 you can't pass bytes as URL to test client

christianwgd/mezzanine,molokov/mezzanine,dsanders11/mezzanine,frankier/mezzanine,readevalprint/mezzanine,stephenmcd/mezzanine,readevalprint/mezzanine,stephenmcd/mezzanine,stephenmcd/mezzanine,dsanders11/mezzanine,christianwgd/mezzanine,frankier/mezzanine,frankier/mezzanine,christianwgd/mezzanine,jerivas/mezzanine,jerivas/mezzanine,molokov/mezzanine,dsanders11/mezzanine,readevalprint/mezzanine,molokov/mezzanine,jerivas/mezzanine