Bug 11719: (follow-up) fix column sorting configuration

Bug 11719: (follow-up) fix column sorting configuration

This patch corrects column sorting configuration to avoid an error when
sorting on the call number column. Also changed: removed obsolete UK
sort mention.

To test, search for serial subscriptions. Test sorting on all columns in
the results table with and without the RoutingSerials preference
enabled. Sorting should work correctly without error.

Signed-off-by: Aleisha <aleishaamohia@hotmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>