Bug 24475: Reword FinesMode system preference

Bug 24475: Reword FinesMode system preference

This patch changes the wording of the FinesMode and
CalculateFinesOnReturn system preferences explanations

1) Install Patch
2) Check that the wording of the FinesMode system preference has changed
to "NOTE: If the misc/cronjobs/fines.pl cronjob is being run, accruing
and final fines will be calculated when the cron runs and accruing fines
will be finalized when an item is returned. If CalculateFinesOnReturn is
enabled, final fines will be calculated when an item is returned."
3) Check that the wording of the CalculateFinesOnReturn system
preference has changed to add "NOTE: This system preference requires
FinesMode to be set to 'Calculate and charge.'" to the existing note.

Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>