Methods 'nosymessage' and 'send_message' in
'roundupdb.py' do not create a system message anymore
if no message id is passed to those methods. The emails
will be send as if created by user admin (admin added
the comment:) and user admin will receive a copy of the
email if 'messages_to_author' in 'config.ini' is set to
'yes', while he might not be the author at all.

This behaviour is the result of code at line 183
(nosymessage) and line 277 (send_message) where the
author id is set to '1' (admin) if 'msgid' is 'None'
(the line nubers are valid for
roundup 0.8.2).