#26 Add option to Delay a mission

[Leon Baradat]

It would be very handy if, in places where the game offers you an option to Scrub a mission, it also offered a button to Delay it instead. It's very common that a player needs to delay a mission, and as it is you have to Scrub it and reschedule it from scratch. A simple Delay (by a turn) option would be very helpful in such cases.