LP#1371173: Reporter: Classic Item List needs link to Item source

Add a link on the reporter.classic_item_list fieldmapper definition
to asset.copy.

Signed-off-by: Chris Sharp <csharp@georgialibraries.org>
Signed-off-by: Ben Shum <bshum@biblio.org>
LP#1234927 Reporter needs Item -> Combined Aged and Active Circulations link

There is a need for item usage statistics that include more than just active
circulations.  I have included links to both Aged (patronless) Circulations
and to Combined Aged and Active Circulations sources.

Signed-off-by: Chris Sharp <csharp@georgialibraries.org>
Signed-off-by: Ben Shum <bshum@biblio.org>
LP#1234927: Pluralizing link names to follow convention.

Based on feedback from Mike Rylander on the Launchpad ticket.

Signed-off-by: Chris Sharp <csharp@georgialibraries.org>
Signed-off-by: Ben Shum <bshum@biblio.org>