Summary: Fixes T3894. The "Log Out" icon has moved away from its rightmost position in the menubar. In rP2e5ac12, I added a "Policy" application. This was the root cause. The reordering logic (below) is slightly wrong. The `array_select_keys()` call is actually using the //strings// (like "Admnistration") to select the groups, not the correct constants (like "admin"). Use the constants instead and get the expected group ordering. Test Plan: Loaded page, "Log Out" is in the rightmost position. Reviewers: btrahan, chad Reviewed By: chad CC: aran Maniphest Tasks: T3894 Differential Revision: https://secure.phabricator.com/D7177