commit progress to getting list artifacts working
add listPublishedArtifacts and listUnpublishedArtifacts to
PoddArtifactManager
add published and unpublished constants to PoddWebConstants
Add partial implementation of Get(rdf) to ListArtifactsResourceImpl
Add tests for listPublishedArtifacts and listUnpublishedArtifacts
bump to sesame-2.7.0-beta3-SNAPSHOT to get access to new
QueryResultHandler features
Add PoddSesameManager.getOntologies
rename method that had a confusing name
more implementation of listing artifacts
add more tests for getOntologies
start reworking the definition and use of PODD_BASE_INFERRED_VERSION