Summary:
- Provide a red version of the logo for the admin view.
- Make selected tabs in the admin view look correct.
- Fix a Chrome styling issue where the username and "settings" would have
weird offsets.
Test Plan:
Loaded Phabricator in chrome and clicked around tabs of an admin interface.
Hovered over logo.
Reviewed By: jungejason
Reviewers: cadamo, jungejason, tuomaspelkonen, aran
CC: aran, epriestley, jungejason
Differential Revision: 371
