Fixed summary on root page

- Added the data directly in the template to cut down on the amount of requests
- Fixed up the javascript but disabled for now - We can enable this again if we want to update this info after the page has loaded (every 30 seconds?)
Added current builds to the root/index page
Sped up grabbing of all the builders

- Was adding them multiple times (now only getting them once!)
Renamed my_builders to build_slaves to help things make sense
Renaming to make it *really* clear what is happening here
Merge branch 'katana' into front-end