Added applicable start and end date columns to RightsStatementCopyright table.
Added applicable start and end date columns to RightsStatementCopyright table.

Autoconverted from SVN (revision:2686)

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