SchedulingDaemonModule: reschedule jobs after configuration change on separate thread

When the module is reconfigured as a consequence of an event coming in, the console shows the following warning:

[INFO] [talledLocalContainer] 05.11.2013 18:20:29 WARN [org.apache.jackrabbit.core.observation.ObservationDispatcher.dispatchEvents():211] Save call with event notification thread detected. This may lead to a growing event queue. Enable debug log to see the stack trace with the class calling save().

The unscheduling and scheduling of the job should be done on a separate thread.