LP1919465 Holds pull list Angular / Wide Holds API Port

LP1919465 Holds pull list Angular / Wide Holds API Port

Ports the holds pull list to Angular and takes advantage of the new Wide
Holds API.  Includes seed data for grid preferences and a new holds pull
list (server) print template.

The UI displays the total holds count and includes a org unit selector.
It pre-fetches all holds, partly to display the full count, but also
based on the assumption that a pull list will typically be used all or
none.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Jennifer Weston <jennifer.weston@equinoxOLI.org>
Signed-off-by: Chris Sharp <csharp@georgialibraries.org>