Merge pull request #1750 from RosettaCommons/aleaverfay/sjq_with_more_read_access
The SJQ now keeps track of the job index ranges for preliminary job nodes so that derived job queens can determine what jobs have been output and what jobs have not been output yet. She also provides read access to the DIETs that track which jobs have completed (at all), completed successfully, failed, and which have been output.