Update libraries.txt

Added:
* AngularJS 1.3.0-beta6, 7, 8, 9, 10, 11, 12 & 13
* jQuery Mobile 1.4.0, 1.4.1 & 1.4.2
* Mootools 1.5.0
Merge pull request #19 from Jeni4/master

Update libraries.txt