D-Net

Refactoring and deprecation for registration on catalogue and registry

For almost every graph we used to return also "concept URLs" like "http://parthenos.d4science.org/handle/Parthenos/REG/Concept/datasettype/metadata"...let's try to avoid them skipping non URL resources and resources whose type is not in the parthenos namespace.

Back with no inference, otherwise we are passing all triples in CIDOC-CRM, DIG and PE, which is not what we want.

Add inferred info after getting sparql result.

Back to simple construct

using lambdas

testing

Fixed duplicate guava dependency

Let's try using a VirtGraph

We should be able to use DEFINE if we use Virtuoso specific classes, see https://www.openlinksw.com/vos/main/Main/VirtJenaSPARQLExample12