Revert "remove problematic series_images_series_id_fk FK"
Revert "remove problematic series_images_series_id_fk FK"

This reverts commit 1eb54162211e914b4670fe9345215002920d61e4.

PRX/cms.prx.org,PRX/cms.prx.org,PRX/cms.prx.org,PRX/cms.prx.org