Upgraded angularJS from 1.2.10 to 1.2.13
WIP: add data-src attribute to attributes whitelist in angularJS html sanitization.

This is intended to allow the user of jquery-unveil library for lazy image loading; this plugin needs a data-src attribute to be added to images, and this attribute is currently being removed by angularJS anti-xss sanitization for the ng-bind-html directive.