D-Net

[maven-release-plugin] copy for tag dnet-openaireplus-mapping-utils-5.0.6

using subject vocabulary dnet:subject_classification_typologies instead of dnet:result_subject

merging result instances, get them grouped by hostedby(key)+license(classid)+instancetype(classid)

added query method

added method to count the number of query hits

namespacePrefix is not a parameter

huge cleanup: unsing common internal model (based on ROWS/ROW, aligned with the data loading procedure)

fixed generation of instanceURI: they are not always DOIs

hbase mapping to consider classid/classname, schemeid/schemename as element attributes (when available)

horrible manual update, I wish we won't need to do this kind of stuff soon...