Implement NIO on the server

[mtpato]

Need to implement NIO on the server. for now the code is working great but with 1000+ clients connected at once i am afraid we will experience performance issues using blocking I/O. this is not and emergency but should be addressed before we go live. the curent code should work perfectly for all Alpha and beta testing

[mtpato]

we may need to look in to this further. We would like to leave connections open all the time and NIO might actually be more expensive. we might want to look in to how chat clients do it with a live open socket