Upgrade to angular 1.3, revert to using CDN for angular, jquery, jquery-ui

Angular 1.3 has been released with a number of improvements [0], so it seems prudent to upgrade. I also took the opportunity to revert to using CDN for jquery, angular, and jquery-ui.

addresses #131 

[0] http://blog.thoughtram.io/angularjs/2014/10/14/exploring-angular-1.3-one-time-bindings.html