Bug 29073: Use 0 and 1 as values for DefaultHoldExpirationdate

Bug 29073: Use 0 and 1 as values for DefaultHoldExpirationdate

DefaultHldexpirationDate is set in the pref screen to 'yes/no'

The code checks if the preference is 'true', 'no' is true

We should instead use 1/0

To test:
0 - Have a fresh devbox
1 - With syspref disabled, place a hold
2 - Note no expiration date set
3 - Enable the preference
4 - Place a hold and note the expiration date is set, good
5 - Disable the pref
6 - Place a hold and note the expiration date is set, bad
7 - Apply patch
8 - Update database
9 - Repeat 1-8, date not set when pref disabled

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>