undeprecate PoddArtifact and add a clear usage scenario for where it can
be used
extract alternative version of checkAuthentication that does not throw
an exception on failure, but keep throw exception on failure as the
default for the new parameter
remove redundant methods from PoddArtifact that are already in
PoddObject
convert PoddArtifact to also wrap the full InferredOWLOntologyID that it
refers to
deprecate SPARQLQueryHelper method and add fixme notes to some other
areas that should be going through PoddArtifactManager or
PoddSesameManager, not hacking through to the database another way to
avoid having to add methods and tests to the managers
Remove PoddObject and PoddArtifact and replace them with a new
PoddObjectLabel interface for all uses
redesign PoddObjectLabel to be immutable
convert interfaces to pass through InferredOWLOntologyID
Merge remote-tracking branch 'origin/master'

Conflicts:
	webapp/lib/src/main/java/com/github/podd/utils/SparqlQueryHelper.java
	webapp/lib/src/test/java/com/github/podd/ontology/test/SparqlQueryTest.java