[WIP] home page update

This is WIP ...

@tardyp This one is mostly for you.

Lots of question remaining:
- How do we get that page automatically update itself ?
- Can we get the slave status ?
- About the build info, do I need to perform a request for each filed I need ? (builder name, slave name)

Do we want a list of recently finished builds, or is currently running enough ?
you can omit the {} in coffeescript, which then make the syntax similar to the python kwargs