Added a home page with a header for the new UI

Added a home page with basic header for the new UI.

Updated ServletModule accordingly.

Testing Done:
Tested using local isolated scheduler.

gradle clean build.

Reviewed at https://reviews.apache.org/r/16195/
Fixed code review feedback.
Added angular seed.
seed cleanup.
More cleanup. Added bootstrap.
more clean up and renaming.
Added a dummy controller.
Added a page header.
more polish.
Displaying dummy data using smaty table.
add a table with search. Some css tweaks needed.
Added ng-grid table. Almost works, no search box.
Found the search box.
Removed smart-table code.
Added UX TODOs for ng-grid viewing.
Revert "Removed smart-table code."

This reverts commit 4af42350b0dff3542df7c0b7d8faed2eced5d0d5.
Using bootstrap layout for smart-table.

Upgraded jquery.
Removed ng-grid.
Made role name a link using directives.
Removed header. Moved to bootstrap 2.3.2 and JS 1.8

Some CSS layout changes.