Add devMode support, Order -> Sell Assets, comment out unused tabs

(Yesterday's coding/design session)
Remove more cruft.
Download Angular 1.2.3 with Bower
Display asset list and perform Sell/Order action using AngularJS
Update to Angular 1.2.13
Improve error handling for 'order' action
Add angular-bootstrap to the project (via Bower.js)
Add angular-resource
Working "Sell" using Angular w/confirm