Bug 21614: Search bar on Stock rotation page displays both [-] and [+] simultaneously

Bug 21614: Search bar on Stock rotation page displays both [-] and [+] simultaneously

This patch modifies the stock rotation template so that it include the
catalog search bar include instead of the patrons one.

To test, apply the patch and enable the StockRotation system preference.

 - Go to Tools -> Stock rotation.
 - Confirm that the search boxes at top are 'Check out,' 'Check in,'
   'Renew,' and 'Search the catalog.' 'Search the catalog' should be
   selected.

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>