Python 2.3 fix: assertTrue *still* doesn't exist in Python 2.3
Python 2.3 fix: assertTrue *still* doesn't exist in Python 2.3

The tests and testing framework should use failUnless() instead.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@10100 bcc190cf-cafb-0310-a4f2-bffc1f526a37

aparo/django-nonrel,FlaPer87/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel,FlaPer87/django-nonrel,aparo/django-nonrel