Remove unused import from RDFQueryView.
Add static method getRDFFormatByType to RDFFormatType class.
Update FileExtractorConfig using RDFFormatType instead of String.
Update using RDFFormatValue as RDFFormatType in FileExtractorDialog.
Add using RDFFormat in FileExtractor.
Add RDFFormat to extractFromFile method using in FileExtractor in RDFDataUnit interface.
Update implementation using RDFFormat in method addFileToRepository - issue #563.
Update calling method extractFromFile in LocalRDFRepo class.
Update calling method extractFromFile in LocalRDFRepoTest class.
Update calling method extractFromFile in VirtuosoTest class.
Merge branch 'master' of git@github.com:mff-uk/intlib.git