Bug 13851: Replace waiting holds logic in circulation.pl with Koha Objects

Bug 13851: Replace waiting holds logic in circulation.pl with Koha Objects

This is the original patch for bug 12892 and replaces the older style of
fetching the holds data with Koha Objects. It will be used as a
foundation for future features.

Test Plan:
1) Apply this patch
2) Create a hold, set to waiting
3) Browse to circulation.pl for that patron
4) Note you see the list of waiting holds
5) Switch your logged in branch to a different branch
6) Note the "Waiting at" line is no longer emphasized.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Cathi Wiggins <CWIGGINS@ci.arcadia.ca.us>
Signed-off-by: Megan Wianecki <mwianecki@mplmain.mtpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>