Enhancements Nickname, and CMD Spy

These commits edit the nickname command and CMD Spy.
Nicknames are now to only be set with 1 parameter for a regular user, /nickname <nickname>. This prevents other users from nicknaming others and abusing it. Staff, will be able to remove nicknames from players, /nickname remove <player>. This will set their nick name to their username.
CMD Spy, now shows World Edit, commands in green if cmd spy is enabled. Thus increasing the visibility of the command.
isn't a problem really.