Tidied up Yeoman/Bower Cruft

Instead of packaging dependencies in the git repo, utilize Yeoman and Bower to do the heavy lifting for us.

when first standing up environment, `cd server/src/main/webapp`, then run `yeoman install`.


### Note
* Introduces weird bug with `.nav-collapse` in navigation bar...might be from bootstrap version differing from compass-twitter-bootstrap version
* Still have to `yeoman install angular-modules` in order to overcome an angular-modules [bug](https://github.com/chadhietala/Angular-Modules/issues/3)