fix for MultiValueDictKeyError for add-to-cart url in DRF browsable api post
fix for MultiValueDictKeyError for add-to-cart url in DRF browsable api post

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