Wikidata ids

[lawlesst]

@vioil

• renamed the journal data directory to replace spaces with underscores
• added wikidata ids where the ISSNs match those in wikidata. See query to get ISSNs from wikidata.
• the modeling in Karma will still need to be changed to add the Wikidata ids to the outputted RDF. I could not get the Karma batch rdf tool to read the R2ML models and process the CSVs into RDF, even with the original file. It could be a version mismatch since I recently updated Karma.