REVIEW ONLY - Initial single page application work

This PR is intended for review only. It has the initial work for the single page application, more specifically:

- Bring Hilary into spapp branch
- Implement tablet ready framework
- Reorganization and cleanup of images and CSS
- Implementation of new designs for top navigation/lists/left hand navigation and other (temporary footer in place as well)
- Index page hauled over to new framework
- Me page hauled over to new framework + made functional with left hand navigation and widget loading
- Signing in and out (both internal and external)
- Content profile has been started but is on hold, waiting for designs to continue.