Upgrade test-utils to support Django 1.5.

ffccaed Merge pull request #23 from wraithan/django-1.5
a5f44fa lift code from django-nose to support django 1.5
ce5136a Merge pull request #20 from andymckay/master
139131c add in SQL_RESET_SEQUENCES option
Merge pull request #58 from glogiotatidis/master

Upgrade test-utils to support Django 1.5.