log all states correctly
improved notification:
- ISPPlayerListChangedNotification
	now has a type param (added/removed/other), see Notifications.rtf for details
- ISPPlayerListChangedNotification
	bugfix: the event was sent, when a local player disconnected
- new notification "ISPContentServiceRemovedNotification", when a local service was dicsonnected
added ISPPlayer.registerPlayer. Can be called for players that are not registered yet with the cloud.