Bug 31731: Offer user a dropdown of authorized values instead of a text field in...

Bug 31731: Offer user a dropdown of authorized values instead of a text field in preferences

This patch updates the system preferences interface so that preferences
which ask for a single authorized value can offer a dropdown menu of
choices instead of a text field.

The patch also updates a few existing preferences to use the new
feature: BundleLostValue, BundleNotLoanValue, and
ClaimReturnedLostValue.

To test, apply the patch and restart services.

- Go to Administration -> System preferences and search for "authorized
  value."
- The search results should include the entries for BundleLostValue,
  BundleNotLoanValue, and ClaimReturnedLostValue.
- Confirm that the dropdowns show the correct authorized value category
  (LOST or NOT_LOAN)
- Confirm that setting or unsetting each of the preferences works
  correctly.

Signed-off-by: Sam Lau <samalau@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>