Bug 27835: Revert "Bug 27180: (follow-up) Remove unused %is_holiday"

Bug 27835: Revert "Bug 27180: (follow-up) Remove unused %is_holiday"

This reverts commit a26d529a2bc7faee3743b4cd1e603ba29411a0b9.

Revert "Bug 27180: Update fines on holidays"

This reverts commit 80e1b4e66f01a07cad9bf37625d879f649edf52a.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 1c4b4cbd91cc9888e9cdbdf1fe43a10c91bd157b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 0cdd5ec6cd34095394a4b6f243ea7ec015df4205)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>