Moved LIS, NLN, and FLN server commands into the FSession class.
Moved the friend list into the FSession class.
Added messageMany(), messageAll(), messageChannel(), messageCharacter(), and messageSystem() to iUserInterface to act ass the preferred method of sending message from channels, characters and the console.
Improved the handling of refreshing and sorting the character lists. (Previous commits resulted in those actions either being performed too often or not at all.)