Bug 21850: Remove search request from page title of OPAC result list

Bug 21850: Remove search request from page title of OPAC result list

This patch modifies the OPAC search results template so that advanced
search terms are not shown in the page title and breadcrumbs. This
removes potentially confusing computer-oriented code from the public
view.

For simple searches the search term is displayed, using the same logic
that determines whether the search bar should be populated with the last
search term.

To test:

 - Apply the patch
 - Peform a simple keyword search in the OPAC
   - On the results page the title and breadcrumbs should show 'Results
     of search for [your keyword]
 - Perform an advanced search with multiple parameters
   - The page title and breadrumbs should show only 'Search results'
   - The breadcrumbs should also show a link back to Advanced search
     using the returntosearch parameter

Signed-off-by: Maryse Simard <maryse.simard@inlibro.com>
Signed-off-by: mikael <mikael.Olangcay-Brisebois@inlibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>