Bug 22381: Change wording on Calendar-related system

Bug 22381: Change wording on Calendar-related system

TEST PLAN:
1. Apply Patch
2. Look at the 5 sysprefs (useDaysMode, OverdueNoticeCalendar, finesCalendar, ExcludeHolidaysFromMaxPickUpDelay, SuspensionsCalendar)
3. Make sure the wording and options all make sense
4. Make sure the options are properly ignoring or using the calendar.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Fixed double 'when' on line 740
No errors

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