Style and Template update to the Admin area

Review Request #2451 — Created July 5, 2011 and discarded — Latest diff uploaded

Information

Review Board

Reviewers

Updating admin.css and some base templates to make it look more like the core application. 

1. Added "Back to Review Board" button (see screenshot)
2. Added "Administration" into main branding title when the user is browsing the admin section (see screenshot)
3. Updated sub navigation styles (see screenshot)
4. Minor updated to SSH Settings, wrapped the SSH configs into a bordered box, so it looks like other settings page.
5. Other minor style fixes. 

Binary and branch available at https://github.com/vladikoff/reviewboard/tree/header-styles
Testing in Browsers:

Chrome (Win with v.13 beta/Ubuntu with v.11), Firefox 3.6 (Win/Ubuntu), IE7/8, Opera (Win)