Signposting links for any non-certificate register page
Source:R/utils_build_metadata.R
generate_page_signposting.RdDispatches on the same `filter`/`table_details` pair the Schema.org
generation in render_html already switches on, so the two
descriptions of a page cannot drift apart.
Arguments
- filter
The filter name (`NA` for the main register, else "venues", "works", "persons", "codecheckers", ...)
- table_details
List containing details such as the table name and subcat name
- register_table
The page's register rows, needed for a work page's author ORCIDs
- has_jsonld
Whether `index.jsonld` was written next to the page