Adding status to account as_dict
Adding status to account as_dict

There was no way to determine if a giftcard was usable when retrieving details from the api. 
Jannes123/django-oscar-accounts,michaelkuty/django-oscar-accounts,amsys/django-account-balances,Jannes123/django-oscar-accounts,django-oscar/django-oscar-accounts,Mariana-Tek/django-oscar-accounts,Mariana-Tek/django-oscar-accounts,machtfit/django-oscar-accounts,carver/django-account-balances,machtfit/django-oscar-accounts,django-oscar/django-oscar-accounts,amsys/django-account-balances,michaelkuty/django-oscar-accounts