LP#1583729 Item status screen column options do not include age protection

LP#1583729 Item status screen column options do not include age protection

Adds the age_protect field to several missing copy interfaces:

XUL client:

- Item status list view column picker
- Item status alternate view
- Holdings Maintenance column picker

Web client:

- Item status alternate view
- Holdings view column picker

Also addresses an issue with displaying the circ modifier in some item
interfaces.

Signed-off-by: Michele Morgan <mmorgan@noblenet.org>
Signed-off-by: Mike Rylander <mrylander@gmail.com>