Include links to detailed information in MessageFacility Messages
Some messages that artdaq produces are either not clear or can arise through several different conditions. We could create web-based documentation pages for these messages with common causes, additional debugging advice, etc, and then put a somewhat URL-shortened link into the message itself.
We may want to avoid 3rd-party shorteners...Is "artdaq.fnal.gov/<hash>" short enough?
If a message's meaning or text changes, we should probably generate a new documentation page, so the link always refers to valid documentation for the user seeing the message.
We should do this work "on demand", for messages which have been noted to be particularly difficult to diagnose ("Back-pressure warning", "Bad Omen", etc). Corollary: Only Warning and Error messages would need this treatment.