Bug 11905 - when editing item, cursor is positioning in search box and not to item

Bug 11905 - when editing item, cursor is positioning in search box and not to item

cataloging-search.inc had embedded js to set focus into the search box.
This patch removes that js from the cataloging-search.inc and adds it into
addbooks.tt and merge.tt to set focus on those pages and allow focus to be set
to the edit items form on additem.tt

Signed-off-by: Paola Rossi <paola.rossi@cineca.it>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>