HasPriority annotation and comparator for prioritizable objects

This is used to sort ontology parsers and ontology storers.
Guice module for creating OWLOntologyManager and OWLDataFactory

Static parser registry removed.
Parser and storer factories removed.
Parsers and storers made stateless.
Ontology factories made stateless.
Parsers and storers associated with Multibinding.
HasPriority used to sort parsers.
Tests updated to match Guice changes.