Fix for Bug 6612 - Sort pulldown for messages in alphabetical order

Fix for Bug 6612 - Sort pulldown for messages in alphabetical order

The values in the menu come straight out of GetAuthorisedValues(), which sorts
its results by "category, lib, lib_opac." Rather than trying to re-sort the
data in circulation.pl this patch changes the template to show 'lib,' the
description, instead of the authorised_value. That will make the output
match the column which is being sorted.

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>