I've reviewed the license vocabulary, adding altLabel to support translations from external resources.
Updated CC0 which had a faulty reference
Included Use_Constraint to dif-to-mmd (this now checks for prefLabel, e.g. CC-BY-4.0, but also for altLabel, e.g. CC BY 4.0, and creates the appropriate identifier/resources in mmd). Any other non empty case will be put into license_text.
This closes #246 and #247
Note: more altLabel can be added in the future if harvested records provide some other consistent strings.
This closes #246 and #247
Note: more altLabel can be added in the future if harvested records provide some other consistent strings.