When no messages are present in a board, the "no messages" text doesn't look very good... maybe some margins?
Has that overlooked appearance :) Seems like some padding or use the infobox around it would be enough, one would hope that message is not seen to often.
Originally I think I just made it a standard li like the ordinary topics. Same styling, same class. That's the best way to handle it anyway.
Done here:
https://github.com/emanuele45/Dialogo/commit/2a3ce204fd1962bbf092b6553ad8fdf244e313b0