[TIMOB-3528] iOS: Distinguishing between remote push notifications

Problem

When an app is running and a remote push notification is received, the callback passed to Ti.Network.registerForPushNotifications is called. This is fine.

When an app is NOT running and a remote push notification is received, if the user taps "View" to open the app, the callback is also called, but NOTHING is included in the event to indicate that this notification was already displayed to the user and the app was launched via the "View" button. Thus, the app displays the notification that the user has already seen.

There are three possible cases:

1. App just launched (by tapped the action button (named "View" by default) in the notification presented by iOS.
   
2. App made active (brought from background to foreground, again by the action button).
   
3. App already running (in foreground).

Suggested Obj-C Fix

FROM:

    // check to see upon registration if we were started with a push 
    // notification and if so, go ahead and trigger our callback
    id currentNotification = [[TiApp app] remoteNotification];
    if (currentNotification!=nil && pushNotificationCallback!=nil)
    {
        id event = [NSDictionary dictionaryWithObject:currentNotification forKey:@"data"];
        [self _fireEventToListener:@"remote" withObject:event listener:pushNotificationCallback thisObject:nil];
    }

TO:

    // check to see upon registration if we were started with a push 
    // notification and if so, go ahead and trigger our callback
    id currentNotification = [[TiApp app] remoteNotification];
    if (currentNotification!=nil && pushNotificationCallback!=nil)
    {
        id event = [NSDictionary dictionaryWithObjectsAndKeys:currentNotification, @"data", NUMBOOL(YES), @"firedFromRegister", nil];
        [self _fireEventToListener:@"remote" withObject:event listener:pushNotificationCallback thisObject:nil];
    }

See Ticket Reference for more Detail: http://support.appcelerator.com/tickets/EBJ-28594-463">http://support.appcelerator.com/tickets/EBJ-28594-463