namespace cleanup and refactor

it’s pretty self-explanatory.

Right now I’m working on a nav bar directive that (I hope) will
eventually be pulled into the angular bootstrap repo. For now it’s a
separate file called navbar-angular, but I hope that I can move it into
the ui.boostrap namespace once it gets approved

right now the website has a basic, centered nav bar on the bottom. It
doesn’t do anything special (yet)