implement update mechanism and bugfix for stopall

Change-Id: I09fdd50051cdd2f44c7bca833c9c613845173fb0
add upgrade parameter for loading configuration from disk

Change-Id: I13bdc3eaca6ea1d22893f6174bee1ecf8c546a62
fix for missing values

Change-Id: If173bf68e3f298b7bdc19d4bc1b0d22594d1787e
Merge pull request #17 from mihaibuzgau/master

implement update mechanism and bugfix for stopall