Added 'Subjob' label to subjobs and fixed Firefox issue with relabelling them.
Added 'Subjob' label to subjobs and fixed Firefox issue with relabelling them.

Autoconverted from SVN (revision:2926)

artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history