bug_6488: Take in account opachiddenitems when searching in opac

bug_6488: Take in account opachiddenitems when searching in opac

Changed searchResults() interface
Added trailing \n when parsing OpacHiddenItems to make YAML happy
XSLTParse4Display() and buildKohaItemsNamespace() take hidden
items as input param
Removed numbering from the search results, looks wrong with
hidden items

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
(cherry picked from commit 706712dd1edebb6eed8b632ca8db4dcd9df39b56)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>