LP#1736419: Bib visibility tests get OR'd

Either the source or the existance of a Located URI will trigger record
visibility, so we will OR them together.

NOTE: This branch is dependant on the branch supplied on LP#1730758. Without
that fix, the bib-level visibility attributes are not updated properly when
Located URIs are added or changed.

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>