Adds ALL CAPS language.

Summary: Adds an ALL CAPs language, requires changes from libphutil as well.

Test Plan: Turn on AC, get caps back. Turn it back to English, stuff went away.

Reviewers: epriestley, btrahan, vrana

Reviewed By: vrana

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4627