Something is broken with password-resetting

Building a test to reproduce the issue (already hitting the first problem).
Will do further testing and fixes in this branch.
Further up the test-road

Running this with Django1.5.5 works here. The test reaches the page congratulating to the new password and showing a link to "Log in". Unfortunately that link leads to an invalid url '/accounts/login' by default:-( But thats probably stuff for a different Issue/PR.
fix for the python3 problem?
Make the urls version-dependant.

This feels a bit dirty. But it could actually work.
Python3 fixes.

Don't know if this is correct, its my first actual encounter with python3;-)
When testing, do so in english.

And follow any language-redirects should these occure.
Added mezzanine-grappelli and mezzanine-workout to thrid party apps in README.
Merge
Better uidb64 password reset version check.
Added Arnold Krille to AUTHORS.