Bug 22695: Remove non-XSLT search results view from the staff client

Bug 22695: Remove non-XSLT search results view from the staff client

This patch removes the option to select non-XSLT search results in the
staff client. The patch removes the markup from the template, updates
the system preference options, and modifies Search.pm so that OPAC and
staff client results XSLT functions are not tied together.

To test, apply the patch and set the XSLTResultsDisplay to a blank
value. Run the database update. The value of the XSLTResultsDisplay
system preference should now be "default."

Perform a catalog search in the staff client. The results should be
shown using the XSLT view.

Test that OPAC search results respect the OPACXSLTResultsDisplay
preference when enabled and disabled.

Signed-off-by: Pierre-Marc Thibault <pierre-marc.thibault@inLibro.com>
Signed-off-by: Bin Wen <bin.wen@inlibro.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>