LP1104823 - OPAC search results "Limit to available items" toggles
off "Show more details"

Added a hidden input to the form when "Show more details" is selected
so that when the form is reloaded, "Show more details" will be still
selected.

Signed-off-by: Kyle Tomita <ktomita@catalystitservices.com>
Signed-off-by: Ben Shum <bshum@biblio.org>