The config was picking the wrong directory so the custom test templates
were not used during tests.

Notes

- Fix missing i18n load tags
- Remove mixed tab/space indentation
- Add two settings tests

Allow using a different app than promotions as the homepage view.

Django 1.4 is not supported anymore, hence we can remove it.

Fixes #881

I used the existing script [1] that cooperates very nicely with vim.
1: https://github.com/rory/django-template-i18n-lint

Fixes #676

Distinguish it from the other folders which each define a category of
test.

Basket app now uses Application object

model for both pods and banners

You can now go through the entire checkout process although
the delivery method and payment options are simple redirects.
The order doesn't actually get placed either.  That's next on
the to-do list.