submissions mode now only requires -r and -s; submission handling reimplemented to use SidToSubs: now it creates one, waits for a submission to be assigned to it, then it runs it; no longer tries to kill a job if job start_time not found
submissions mode now only requires -r and -s; submission handling reimplemented to use SidToSubs: now it creates one, waits for a submission to be assigned to it, then it runs it; no longer tries to kill a job if job start_time not found

wtsi-hgi/vr-pipe,wtsi-hgi/vr-pipe