Allow older django to find the tests
Make tox work with Django>=1.6
Django 1.7 will soon be out
Turn on testing for python 3.3

3.4 will have to wait due to a bug in virtualenv that should be fixed in
a release higher than 1.11.4.
Test-coverage
Check that unicode(Vote) works for python < 3

This will have to change for python 3.x.
Also pushes coverage above 90% for this file :)
print(vote) now works on both python2.x and 3.x
Passes 2to3

All strings now unicode (luckily no bytestrings used)