allowing a long stripe ID

up to 255 chars
Merge branch 'refs/heads/kohana_v3.3/feature/stripe_id' into kohana_v3.3/master
correcting the stripe api version
Merge branch 'refs/heads/kohana_v3.3/fix/stripe_api_version' into kohana_v3.3/master
moving some credit card methods to a common file
Merge branch 'refs/heads/kohana_v3.3/feature/reusable_code' into kohana_v3.3/master