Bug 19130: (followup) Controller scripts should preserve behaviour

Bug 19130: (followup) Controller scripts should preserve behaviour

This patch is a followup to making
Koha::Acquisition::Booksellers->search work as any other Koha::Objects
(DBIC) query instead of having a different behaviour hardcoded.

To achieve it, this patch makes the controller scripts add
wildcard/truncation chars as prefix and sufix for searches, and make the
default sorting for results be by 'name', ascending.

To test:
- Just verify the behaviour remains unchanged by this patchset on the
controller scripts (re. searching).

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>