Please add ISSN Centres RDF to QA

[kefo]

Catalogers must identify the ISSN Centre of the related ISSN. Although in the long run - like years and years and years from now - we should be able to just query the URI for the ISSN itself to determine this information, at this time we need to cater to this need since catalogers are required to alter this data point when ISSN numbers are transferred between ISSN Centres.

Using the ISSN organization's URIs for ISSN Centres, I have crafted some basic RDF descriptions for the ISSN Centres that give each a preferred and alternate name and identify the Centre's code. The RDF has been made available via the authorities channel in slack.

I have updated the spreadsheet as requested: https://docs.google.com/spreadsheets/d/1rPvEoP9iYNkxJ0eWC8gXe3ci7e6mhW0da59xkGhadi0/edit#gid=1269808426

[eichmann]

Simple case for DAVE - three properties all indexed and returned. I've pulled the RDF from Slack.