LP#813151 Copy Location sort order in Advanced Search

LP#813151 Copy Location sort order in Advanced Search

This patch addresses the unintuitive copy location sort order in
Advanced Search when searching at a specific branch. Thanks to
Dan Wells for the code suggestion which changes the order in the listbox
to alphabetical sort by asset.copy_location.name.
Tested, and confirmed working in 2.0.4 test and production environments.

Signed-off-by: Michael Peters <mrpeters@library.in.gov>
Signed-off-by: Thomas Berezansky <tsbere@mvlc.org>