[SERVER] Separate Playerjoin /leave LOG

[noliVe]

Why need that?
- searching your friends on servers is easy while they are playing, but not when they are disconnected!
- see if the map was last played with users

what am i interested in?
- get a last log of users who joined my map
- see if a map is done when nobody plays on it
- get my servers to shut down after a certain time not used

[boail]

+ a seperate chat log