Create new RDF module.
Remove all RDF interfaces, implementation and tests from INTLIB.
Remove RDF dependency from commons.
Remove Virtuoso dependency from commons-app
Add RDF a Virtuoso dependency to RDF module.
Add dependency to RDF module to backend.
Add dependency to RDF module to commons-module
Add module RDF to INTLIB.
Add RDF enums.
Add RDF exceptions.
Add RDF interfaces.
Add RDF repositories implementations.
Add RDF test classes and test data.
Resolve RDF dependency in SPARQL_transformer.
Resolve RDF dependency in RDF_loader.
Resolve RDF dependency in RDF_extractor.
Resolve RDF dependency in File_loader.
Resolve RDF dependency in File_extractor.
Update methods in DataUnit interface.
Update classes in frontend using RDF module.