D-Net

#840 moving IdentifierMapping from importer to common package

#840 renaming DeduplicationMapping to more generic IdentifierMapping

#757 aligning common importer with current API of PMC citations ingestion

#637 renaming document_extractedMetadata algorithm to more descriptive document_affiliations, propagating changes to action set identifier properties names

reenabling PMC ingestion when citationmatching flag is set

updating job properties

setting export_action_set_id_entity_dataset to $UNDEFINED$ by default, this should not be required because dataset reference extraction module might be deactivated. Check will be performed at dataset entity exporter module and when value is not set - exception will be raised.

#757 temporarily disabling PMC ingestion until fixing openaire identifiers building process

#568, #577 enabling proper citations export by introducing PMC citation ingestion and citation matching outcome merging and grouping for exporting purposes. Introducing union instead of collapser which should be introduced in near future.

removing output_citation_pmc port duplicate