Add method addTriplesFromFile - need for calling in FileExtractor.
Change RDFDataRepository to RDFDataUnit in File_extractor.
Add method saveTripleToFile to RDFDataUnit - need for File_loader.
Change RDFDataRepository to RDFDataUnit in RDFDataUnitList.
Change RDFDataRepository to RDFDataUnit in File_loader.
Add method addTriplesFromSPARQLEndpoint to RDFDataUnit - need for RDFExtractor.
Change RDFDataRepository to RDFDataUnit in RDFExtractor.
Change RDFDataRepository to RDFDataUnit in RDF_loader.
Change RDFDataRepository to RDFDataUnit in SPARQL_transformer - close #312 issue
Merge branch 'master' of git@github.com:mff-uk/intlib.git