Multiplayer bugs

[geraintwhite]

• [x] chunk loading issues (we should try to resend after a timeout)
• [x] player characters disappearing (server keeps disappearing)
• [x] inventory sync issues (server gets a client's inventory)
• [x] server player teleports visually to client on client's view

[olls]

We will also need to think about terrain generation, the current version is assuming one player.

[geraintwhite]

Still some problems with sockets not closing properly when the server closes and logs out all clients.