Bug 11132: don't clear the results list upon adding a biblio to a list

Bug 11132: don't clear the results list upon adding a biblio to a list

A "busc" param is cleared if the template name is not opac-.*detail.tt.
So if a user adds a biblio to a list, he cannot continue to browse
results.

Test plan:
- launch a search at the OPAC (opac-search.pl).
- click on a result and browse results (using previous/next links).
- a title attract your attention and you add it to a list
  ("Save to yours lists" link on the right).
- save the list.
- browse again results.

Signed-off-by: Joy Nelson <joy@bywatersolutions.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Tested according to test plan, also checked some other pages and actions
accessible from the detail page.
Passes all tests and QA script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>