This patch renames the 'OpacLocationBranchToDisplayShelving' syspref into
'OpacLocationOnDetail' and adds it a fourth option, 'column', that makes
the OPAC display shelving location on a separate column, instead of the
library names (home, holding or both).
Sponsored-by: Dover Signed-off-by: Owen Leonard <oleonard@myacpl.org> Signed-off-by: Nick Clemens <nick@bywatersolutions.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>