Locale sync

[matthewjackowski]

Find a way to sync locales between Transifex and Zendesk, currently the user needs to manually enable the same locales in both in order for translations to work.

[diegobz]

I guess for whenever a language, example de, is enabled in Zendesk we should:

1. Get project stats and check whether language already exists in Transifex.
2. If it does, nothing else needs to happen
3. If it doesn't, then we should make a call to the project languages[1] endpoint to add the new language. A coordinator is required to create a language, so the username for the Transifex credentials stored in the zendesk app can be used for that.