More test fixes

This re-adds eadred/sampledata, removes a bunch of leftover nose stuff and updates the tox.ini to test Django 1.7.

r?
this can also be `INSTALLED_APPS = Base.INSTALLED_APPS + ('eadred',)`
which can reduce confusion for people. At the end of the day it turns out it's pretty important to have these objects be tuples (which you've got)