Log monitor 26m support and recorder status

The log monitor now knows about the 26m by default and will ring a local alarm if run from ops1hb.

The log monitor also shows the recorder status and scan name. Recorder status is obtained by noticing the disk_record command. It doesn't actually know for sure if the Mark5 is running but just reports what the recorder should be doing, so always check dimino and the cameras to be absolutely sure!