Opening a new series of tickets about smart links I found during recent cleanups.

submithub.com supports both artist links (which we might want to allow) and track or release-specific links (which we definitely want to block).

Edit search: https://musicbrainz.org/search/edits?auto_edit_filter=&order=desc&negation=0&combinator=and&conditions.0.field=url&conditions.0.operator=%7E&conditions.0.args.0=submithub.com%2F*&conditions.1.field=type&conditions.1.operator=%3D&conditions.1.args=90%2C233&field=Please+choose+a+condition

Example artist URL (the "About" section could contain relevant information): https://www.submithub.com/artist/adil-mhouar 

Example track URL: https://www.submithub.com/link/jared-abvan-cerca-y-lejos