Basic chat commands and animation system.

A basic chat system has been added, including local chat, /ooc chat, /b
(local) chat and /Shout'ing chat.
All of these chat's except for the /ooc uses a proximity system so only
local players can see the players messages.
A basic animation system has been tested using a pre-made filter script.
In future this will be re-written as part of the gamemode itself.