Basic debug interface setup for geolocation info.

There's a start/end button to track when a path "starts" and "ends" (when
the buttons are pressed), and a timer and coordinates are displayed. I don't have a mobile device that can access the Internet, and my laptop isn't really cooperating when I try roaming around campus with it, so if someone could upload it to a generic server and test out if the coordinates are updating, that'd be great.

I left room for adding some results functionality, and the sending of
"path complete" data to wherever that needs to go. If there's anything
further you want me to do with this, or if I misinterpreted something, let
me know.
It doesn't work...
Rewrite of GPS debugging interface with Backbone

I still want to redo the view as a template, but this at least gives us
an idea of how to do the page with MVC.
Rewrite javascript DOM manipulation as a template

The template is slightly less code, and feels cleaner.
Merge pull request #10 from routemaster/debuginterface-backbone

Reworked debug interface, cleaned up and redesigned to use Backbone.js