Bug 37373: Combine duplicate class attributes

Bug 37373: Combine duplicate class attributes

This patch corrects two instances in patron-search.inc where there were
two class attributes on one input. Combining the two class names under
one class attribute seems to fix the focus problem.

The patch also updates the global JS giving focus to elements with a
"focus" class so that it only targets elements which are visible. This
prevents the browser from trying to put focus on a field in a hidden
modal.

Signed-off-by: Andrew Fuerste Henry <andrewfh@dubcolib.org>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit d56226d7378f627d46012a8f2dcf196c1d99c002)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>