Django 1.7 app fixes suggested by @aaugustin
Django 1.7 app fixes suggested by @aaugustin

emergence/django-simple-history,treyhunner/django-simple-history,luzfcb/django-simple-history,pombredanne/django-simple-history,pombredanne/django-simple-history,treyhunner/django-simple-history,luzfcb/django-simple-history,emergence/django-simple-history