Show translation option names natively, instead of in the current translation

Summary: Ref T5267. Put "Deutsch" in the list instead of "German", so you can find your language without knowing the English word for it.

Test Plan: {F1661598}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T5267

Differential Revision: https://secure.phabricator.com/D15980