(since the implicit report from settting the abbreviated topic won't
have the whole message).
-• In messages (like from /solved) don't use a raw user_name value from
- the request, but instead some tagged version of a user ID (which
- Slack will render as a display name).
-
• Allow a hunt (and perhaps a round) to have multiple URLs
• Provide an "Archive channel" button in the channel when outputting