Fix bad method call in Website helper
Merge pull request #51 from walterdolce/hotfix/fix-bad-method-call-in-website-helper

Fix bad method call in Website helper
Refactor Customer fixture

- Added service container.
- Delegating websites related date responsibility to the Website
  helper class.
Merge pull request #53 from walterdolce/feature/refactor-customer-fixture

Refactor Customer fixture