Bug 15119: Hide search header text boxes on render

Bug 15119: Hide search header text boxes on render

When the page rendering is slow or the page is heavy, the tabs in the
header shown be not correctly displayed as tabs.

This patch suggests to hide them, display the first one, and wait for
the JS code to display them nicely.

To easily reproduced the ergonomic issue, go on the circulation home
page (/cgi-bin/koha/circ/circulation.pl) and search for a patron 'a' or
'd', you will get a lot of result and the page will be slow to be fully
displayed.

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
Works as advertised

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Christopher Brannon <cbrannon@cdalibrary.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit 70eedf2217e1bfde1c56bc77c8dd0dc039124f47)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>