Unused experiment
If dbotPortalForceURL set, allows overriding public URL.
Added support for X-Forwarded-For.
Add class CircleTable

Circular buffer style lua table (array)
Minor improvements

Clear trustedCodeAcctID when not trusted.
etc.findFunc defaults to find pattern .*
In html conv output, convert newline to br.
Chat history

Using CircleTable for chat history.
Update lastmsg to read from new history.
Improve adding to history.