Added Google Analytics tracking for Cordova apps. This uses a different GA account, so the numbers qon't get mixed up
A bug in the 'trackEvent' method in the previous commit broke the event tracking. This fixes that problem
Added app activation tracking. Changed analytics plugin. Overloaded the 'normalEvent' to make the 'selector' parameter optional
Automerge. The work on the apps and the Windows 8 tiles happened in parallell