All Primary datasets

incl. the changes discussed today, fake DOIs from Tibor's file, only missing 2 descriptions. Descriptions and other examples will follow tomorrow morning
If we do create regular collections, then there are two things to consider: (1) collection tree; (2) search factets.  It would be weird if "Research" appears alongside say "CMS Primary Datasets" as another first-class citizen.  If we tag, we don't have to consider these.