Change input com port filter to not put messages on the internal bus if they are filtered out.
Added new boolean to configuration file, LegacyInputCOMPortFilterBehaviour. Default is false or "0" in config file. This means the new behaviour will occur, i.e. input messages that are filtered will be dropped.
Changed output to NMEA debug window to show red messages for those on input that have been filtered and dropped. Changed the legend to cover this.
Updated message window to show DARK RED for messaged dropped from input data stream. Added legend for RED messages