JobService: Replace low-level RDF with JobPojo API calls
Merge branch 'master' of https://github.com/DM2E/dm2e-ws

Conflicts:
	src/main/java/eu/dm2e/ws/services/job/JobService.java
Refactoring: XsltService single-class, cruft deleted, proper xsd:datetime->Date mapping, LogEntryPojo, persistence