Add locales for client-side.

Using the locale data from webpay and compiling it to json/js this adds the hook-up for requiring the necessary locale data at runtime.

Overriding the lang is possible with ?lang=LANG e.g. ?lang=pt-BR (though not direction yet)

![webpay___was_locked-2](https://f.cloud.github.com/assets/1514/2214011/7cc310fe-99c8-11e3-983f-32488d4b683d.png)