Added destination_whitelist and destination_blacklist fields to the ShippingCompany class which are semicolon separated lists of city _codes_ (meaning internal shipping company's codes used for charge calculations). There is yet no tag-like interface to modify this field. `destination_allowed` helper method also added as property.
Added destination_whitelist and destination_blacklist fields to the ShippingCompany class which are semicolon separated lists of city _codes_ (meaning internal shipping company's codes used for charge calculations). There is yet no tag-like interface to modify this field. `destination_allowed` helper method also added as property.

`OSCAR_SHIPPING_IF_NOT_FOUND` setting invented also to drop out method if no city codes found by the API call.

Unfortunately, typo in the field name was found. Yep, _lenght_ is not length (thanks to pycharm:) Migration MUST be made in the project!

okfish/django-oscar-shipping,okfish/django-oscar-shipping,okfish/django-oscar-shipping