big changes

hey, I'm making some big changes - but I'm willing to pull req them back to upstream.

here are some:
- added bower & grunt for workflow (automatically watch changed files, livereload, and other niceties) 
- updated version of angular
- some styling improvements
- started using the "Bello Script" font to look a bit more like cloud9's general style
- added font-awesome icons
- introduced the basic concept of editing workspaces (future to come - selecting between various kinds of workspaces, e.t.c)