now extending WakefulBroadcastReceiver

added logic to start a wakeful service, and the intent is sent before starting the alarm manager
bug fix when anwering an incoming call

look like there's no way of getting the incomingNumber when call is CALL_STATE_OFFHOOK. Set it to null and send it with IncomingDrinEvent, the server will remove the last popup in this case
added DrinViewerBroadcastReceiver.completeWakefulIntent method call
fix to targetSdkVersion and make use of new icons
new application icons