Bug 25566: Add option to ignore found holds and use it when checking high holds

Bug 25566: Add option to ignore found holds and use it when checking high holds

To test:
 1 - Find or create a record with 10 items
 2 - Set sysprefs:
     decreaseLoanHighHolds - enable
     decreaseLoanHighHoldsDuration - 2
     decreaseLoanHighHoldsValue - 2
     decreaseLoanHighHoldsControl  - 'over the number of holdable items'/dynamic
 3 - Set circ rules to allow 1 hold per record on the relevant record
 4 - Place 3 holds on the record
 5 - Check one item in and confirm hold to set to waiting
 6 - Issue to the patron with the waiting hold
 7 - Get a notice that loan period is decreased
 8 - Don't confirm the checkout
 9 - Apply patch
10 - Restart all the things
11 - Repeat checkout, no decrease this time!

Signed-off-by: Christopher Brannon <cbrannon@cdalibrary.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>