notificationManager = new NotificationManager(this);
notificationManager.startup(null);
markerManager = new MarkerManager(this);
markerManager.startup(null);
synchronizer = new Synchronizer(this);
refreshManager = new RefreshManager(this);
saveManager = new SaveManager(this);
saveManager.startup(null);
//must start after save manager, because (read) access to tree is needed
refreshManager.startup(null);
aliasManager = new AliasManager(this);