Created DiscoverSensorsImpl and RegisterServiceImpl skeletons. Removed the equivalent code from SchedulerRsControler, cleaned code

Signed-off-by: nkef <nkef@ait.edu.gr>
Merge branch 'ait-develop' of https://github.com/OpenIotOrg/openiot into ait-develop
Added Swing UI, added functionality to load OSDSpec from file and register it to the Scheduler, Added Serializer and Deserializer for OSDSpec

Signed-off-by: nkef <nkef@ait.edu.gr>
Added Jena and lsm maven Dependencies to enable the Scheduler LSM persistence API, Removed jar libraries from lib

Signed-off-by: nkef <nkef@ait.edu.gr>
Added lsmlibs.jar and the comand to install it to a maven local repository

Signed-off-by: nkef <nkef@ait.edu.gr>
added an OSDSpec SimpleSample XML file