Fixed tests in commons-app.
Merge branch 'release-0.2.1' of github.com:mff-uk/intlib into release-0.2.1
"Named Graph" component repair
"Named Graph" bug fixed
setting mandatory fields
Selecting DPU bug fixed
Merge remote-tracking branch 'origin/release-0.2.1'

Conflicts:
	frontend/src/main/java/cz/cuni/xrg/intlib/frontend/gui/views/DPU.java
	module/File_loader/src/main/java/cz/cuni/mff/xrg/intlib/loader/file/FileLoaderDialog.java
	module/RDF_extractor/src/main/java/cz/cuni/mff/xrg/intlib/extractor/rdf/RDFExtractorDialog.java
	module/RDF_loader/src/main/java/cz/cuni/mff/xrg/intlib/loader/rdf/RDFLoaderDialog.java