Grafeo: GStatement constructor from Jena statement
Client: getter/setter for jersey client
AbstractPersistentPojo: constructFromRDF commented out for now
Grafeo: list statements, renaming blank nodes, DataService more error checking
Integration tests for config service, demo service
Merge branch 'master' of github.com:DM2E/dm2e-ws

Conflicts:
	src/main/java/eu/dm2e/ws/grafeo/Grafeo.java
	src/main/java/eu/dm2e/ws/services/data/DataService.java
	src/test/java/eu/dm2e/ws/services/data/DataServiceITCase.java