Bug 17074: Follow-up: fixing encoding issues with multiple search terms

Bug 17074: Follow-up: fixing encoding issues with multiple search terms

If there was more than one search term you could see that that it
was url encoded. Also problems with search terms with umlauts and
other diacritics.

Patch should fix that.

https://bugs.koha-community.org/show_bug.cgi?id=17074
Signed-off-by: Marc <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 09d7a47f1fb1c645d0e3ffb93fb88409b3310363)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
(cherry picked from commit a42da0108e3f8dee889ef28e0c0d736e23a9aacc)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>