DatabaseConnector:  Attempt to handle failure to install job.

First, try creating the process with breakaway.  If the process
still can't be assigned to a job, just ignore the failure (and in
this case the monitor won't be able to monitor the PLINK process
in a comprehensive fashion if there was already an old PLINK
process running).
Merge branch 'master' of https://github.com/ALandFarAway/ALFA-Base-Resources