Bug 15260: Add new useDaysMode option "Dayweek"
This patch adds a new "Dayweek" option to the useDaysMode syspref, it
has the description: "the calendar to push the due date to the next open
day on the same weekday".
Sponsored-by: Cheshire West and Chester Council
Sponsored-by: Cheshire East Council
Sponsored-by: Newcastle City Council
Sponsored-by: Sefton Council
Signed-off-by: Liz Rea <wizzyrea@gmail.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>