added open box commands

Added code such that creating an open box page is part of the offline configuration workflow. The output dir will be <output dir of closed box>/OPEN-BOX To make an open box, run singularity exec -B $TMPDIR <image> make openbox At this point, the permission of the open box is not open (it is set to chmod a-r <output dir of closed box>/OPEN-BOX). To preserve as much blindness to the results as possible, the command to change the permissions can be done by running singularity exec -B $TMPDIR <image> make unlock This changes the permissions to chmod a+r <output dir of closed box>/OPEN-BOX.