Bug 11533: fix authority searching with no sorting when QueryParser is enabled

Bug 11533: fix authority searching with no sorting when QueryParser is enabled

This patch fixes an issue where chosing 'None' as the sort order
for an authority search would result in zero hits if QueryParser is
eanbled.

This patch also adds some additional test cases.

To test:

[1] Enable QueryParser.
[2] Perform an authority search in the staff interface that
    uses 'Heading A-Z' as the sort order and returns hits.
[3] Run the same search, but with the sort order set to 'None'.
    No hits are returned.
[4] Apply the patch.
[5] Do step 3 again.  This time, hits should be returned.
[6] Verify that prove -v t/db_dependent/Search.t passes.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 27c312b721d5533560234675712391a60f354c51)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>