Allows you to host (or play offline) any operation-event (day), as regular mission.

• not a skip cheat: won't continue with next day, won't create a saved operation.
• not an xp cheat: won't reward anyone with the 'completed operation' bonus-xp, when last day chosen.
• not an unlocker cheat: requires the operations to be unlocked accordingly.
• informs about it in chat, when started, so clients understand. (also repeated for drop-ins)
• compatible with unmodded clients, by design.
• not breaking real operations, by design.

Known 'bugs':

• +1 increased maximum days in loading screen shown, when playing the last day of each operation.
  • this is just a visual glitch, and has something to do with how we trick unmodded clients into not rewarding the bonus xp. - don't worry, it's fine :D