Revert "fixed: ProductRetrieveView does not accept translatable slug"
Revert "fixed: ProductRetrieveView does not accept translatable slug"

This reverts commit e0db14a3db19d07e0a8bfdce38ca4c8098771b6e.

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