Query-Objects
Minor improvements to bean objects and extension to conference service.
Merge remote-tracking branch 'origin/master'

Conflicts:
	conference-client/src/main/java/com/prodyna/conference/Talk.java
	conference-service/src/main/java/com/prodyna/conference/service/ConferenceServiceBean.java
	conference-service/src/main/java/com/prodyna/conference/service/TalkServiceBean.java