Create nose_tests.py

Nose tests collector.
Even if it's not the default django behaviour but nose is heavily use by the django community. And otherwise it create a difference between the local dev and the CI. The task is imperfect but it's a start.
Add new runner for supporting django nose
remove setup and teardown for nose runner because duplicate with the django_nose
Merge pull request #140 from rach/patch-1

Tring to merge nose support