* mandos-monitor (MandosClientWidget): Accept new signal "NeedApproval". (MandosClientWidget.checker_completed): Don't log successful checkers. (MandosClientWidget.checker_started): Don't log. (MandosClientWidget.need_approval): New; just log a message. (MandosClientWidget.rejected): Take an additional "reason" argument. (MandosClientWidget.keypress): Accept "+" and "-" keys to accept or reject, respectively.