Fix pip double requirements problem
Fix pip double requirements problem

We should only list tox, pytest and such in the test / dev requirements.

nimbis/django-shop,jrief/django-shop,awesto/django-shop,divio/django-shop,khchine5/django-shop,jrief/django-shop,divio/django-shop,rfleschenberg/django-shop,nimbis/django-shop,divio/django-shop,jrief/django-shop,khchine5/django-shop,khchine5/django-shop,nimbis/django-shop,rfleschenberg/django-shop,rfleschenberg/django-shop,awesto/django-shop,nimbis/django-shop,rfleschenberg/django-shop,khchine5/django-shop,jrief/django-shop,awesto/django-shop