Calendar event not opened if local notification is clicked with the app killed in Android

If you click an event reminder local notification when the app is dead in Android, the app displays the Dashboard instead of the event.

I did some debugging and it seems the click event is triggered before platform.ready is done, but we don't listen to the events until platform.ready is done. This platform.ready was added in the 3.5.2 release to fix local notification events, so we should be careful about removing it.