Bug 6886: ensure that singleBranchMode does not display library name for reference...

Bug 6886: ensure that singleBranchMode does not display library name for reference copies

Test plan: Enable singleBranchMode and  OPACXSLTResultsDisplay. Perform
a search in the OPAC which returns results containing not-for-loan
items. Before the patch these items will show their library in search
results loan items. After the patch there will be not be a library
listed, matching other items in results.

Signed-off-by jmbroust <jean-manuel.broust@univ-lyon2.fr>

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Comments on second patch.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>