Fixing tests with postgres DB which does not reset the auto id increment back to 1 after a test.
Fixing tests with postgres DB which does not reset the auto id increment back to 1 after a test.

fabrique/django-sortedm2m,gregmuellegger/django-sortedm2m,gradel/django-sortedm2m,fabrique/django-sortedm2m,gregmuellegger/django-sortedm2m,gradel/django-sortedm2m,gradel/django-sortedm2m,gregmuellegger/django-sortedm2m,fabrique/django-sortedm2m