Bug 10656: add regression test

Bug 10656: add regression test

This patch adds regression tests to verify the sort
order when fetching authorised values in either staff
or OPAC mode.

This patch also wraps the Koha.t tests in a transaction, and
better handles skipping tests if Test::Deep is not installed.

To test:

[1] Verify that prove -v t/db_dependent/Koha.t passes

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Tests pass with all patches applied.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>