Expose all translations for client-side switching

@awooldri needed all of the translations to already be exposed all on the page to switch between languages on the client.

This exposes all of the translations under `APP.translations` so the example can easily be re-rendered.
If you're going to expose everything, then this is no longer contextual to the request, and should be moved into `app.js`, done once and use the `{cache: true}` option.