Exclude AFK players from list of players to be in bed for skipping night

[valentynhol]

This is suggestion from JohannesPaulHoffmann

"<JohannesPaulHoffman> bloksmaster: That AFKin' Players get excluded from the Players Who need to be in the Bed to skip the night."

[JohannesPaulHoffmann]

It would be really nice, if this get added, as it might help Noobs/Beginners.