[#13][PyDic token lookup] Minor refactor of "request on idle" mechanism (using ng.$timeout now)
[UPGRADE] Bumping AngularJS, jQuery, Bootstrap, ... versions

Please run $ bower update from yo/ directory
feat(token-dropdown): #13, #17 [PyDic token lookup] UI - Dropdown (Autocomplete) when adding token

Employed solution uses:
* Angular UI Boostrap's Typeahead - note since we are using Boostrap 3, pre-release [boostrap3](https://github.com/angular-ui/bootstrap/tree/bootstrap3) branch was used
* Token lookup API is now [JSONP](http://en.wikipedia.org/wiki/JSONP) - required to asynchronously populate the Dropdown. Previously API responded with pure JSON