docs($interpolate): fix example for provider w/ custom symbols
docs($cookies): add info about angular-cookies.js

per the [top comment here](http://docs.angularjs.org/api/ngCookies.$cookies#comment-912064775)

updating documentation so it matches [$resource](http://docs.angularjs.org/api/ngResource.$resource)
and instructs the user to include the `angular-cookies.js` and load `ngCookies`.

Closes #3607
docs($route): add hint for ngRoute module inclusion

Closes #3583
fix(grunt): fix regex in grunt util to handle pre-release versions

NOTE: this also includes a temporary work-around for Bower