Added channels, private messaging and broadcasting

Added channels: Game-Chat, Help, RL-Chat, Trade, Gamemaster, Staff and
Tutor.
Added rule violations channel.
Private messaging is now possible
Private channels aren't yet included, I do not understand it's logic
yet.
Added channels class
Moved channels events to it's own class, it's no longer managed in
Game.cs
Addresssed some base class initializing bugs
Added few events, only few are handled