Fix generation of JCB bank card prefixes. Fixes #2275.
Fix generation of JCB bank card prefixes. Fixes #2275.

We have to force the output of `itertools.imap` into a list.
sonofatailor/django-oscar,django-oscar/django-oscar,solarissmoke/django-oscar,django-oscar/django-oscar,sonofatailor/django-oscar,django-oscar/django-oscar,sasha0/django-oscar,sasha0/django-oscar,sonofatailor/django-oscar,sasha0/django-oscar,solarissmoke/django-oscar,django-oscar/django-oscar,solarissmoke/django-oscar,solarissmoke/django-oscar,sasha0/django-oscar,sonofatailor/django-oscar