Changed all ReceiveOnceBehaviour of the service agent tot ReceiveBehaviours. The SA just creates one of each and they keep running instead of creating one instance of those for every product-/servicestep.
Merge branch 'development' of https://github.com/hesselmeulenbeld/HUniversal-Production-Utrecht into development

Conflicts:
	src/java/rexos/mas/service_agent/behaviours/GetPartsInfoResponse.java