Bug 17793: Make sysprefs search show on all Admin pages

Bug 17793: Make sysprefs search show on all Admin pages

This patch is amended to use the sysprefs search on all Administration
pages that do not have their own custom search.

To test:
1) Go to Administration
2) Notice Catalogue search at the top - seems out of place.
3) Apply patch and refresh page.
4) Notice admin / sysprefs search now shows and is more appropriate.
5) Confirm searching for sysprefs still works

This patch affects the following pages:
- admin-home.pl
- audio_alerts.pl
- authtypes.pl
- auth_tag_structure.pl
- authorised_values.pl
- biblio_framework.pl
- marctagstructure.pl
- branch_transfer_limits.pl
- branches.pl
- checkmarc.pl
- classsources.pl
- columns_settings.pl
- didyoumean.pl
- edi_accounts.pl
- edi_ean_accounts.pl
- fieldmapping.pl
- item_circulation_alerts.pl
- items_search_fields.pl
- items_search_field.pl
- item_types.pl
- koha2marklinks.pl
- matching-rules.pl
- oai_sets.pl
- oai_set_mappings.pl
- patron-attr-types.pl
- smart-rules.pl
- transport-cost-matrix.pl
- sms_providers.pl

Sponsored-by: Catalyst IT
Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>