Bug 19046: Make seach pulldown to retain index selection

Bug 19046: Make seach pulldown to retain index selection

This patch also fixes add the term in the search input

Test plan:
Enable IntranetCatalogSearchPulldown
Search for a term using the search input in the header (simple search)
Re-do selecting different indices

The selection must retain on the search result page.

Signed-off-by: Pierre-Marc Thibault <pierre-marc.thibault@inLibro.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>