fix bug with android not sending cached message

Scenario: User taps the push notification when the app is not running.  The push notification is not being sent after the app is launched.
Merge branch 'send_cache_message_patch' of github.com:keithdmoore/aerogear-pushplugin-cordova into keithdmoore-send_cache_message_patch

Conflicts:
	src/android/org/jboss/aerogear/cordova/push/PushPlugin.java