mappings/Veg+-VegCore.csv.csv: Removed hypothetical terms which are not in use by any VegBIEN datasource

mappings/VegCore.csv: BIEN2 terms: Added sub-namespaces (bien_web, geoscrub, etc.) to source URLs

dict2redmine: redmine_add_links(): Hyperlink just the source name, not also the () around it

dict2redmine: RedmineDictWriter: Use h2 instead of h3 for the term name so that the term will be normal-sized instead of smaller in the Redmine table of contents

dict2redmine: Renamed redmine_url() to redmine_link() because it generates links, not URLs

dict2redmine: redmine_add_links(): Put citations in () instead of [] to avoid conflicting with the Redmine syntax for internal links ( ... )

mappings/VegCore.csv: Terms: Removed namespace prefixes (dcterms:), because VegCore terms are globally unique within VegCore and there should not be multiple versions of the same VegCore term with different namespaces. Provenance is instead indicated in the Sources column, which contains not just a namespace but a full URL to each source term.

dict2redmine: Hyperlink each term to its anchor in the data dictionary, rather than to its first source, which is not necessarily the definitive definition of the term. This also allows clicking the term to get its permalink in the address bar, rather than having to click the small, light gray paragraph mark next to the term name that Redmine provides.

dict2redmine: redmine_add_links(): Fixed bug where need to avoid matching internal links ( ... ) as citations ( [...] )

mappings/VegCore.csv: Term names: Changed special characters to _ because Redmine doesn't support special characters in HTML anchors (it removes everything except letters, numbers, _, and -)