Allow client handshake to be reset by server to support BungeeCord.
Merge branch 'bungeecord' of github.com:bloodmc/FML
Fix bug with entityspawn - if the entity doesn't extend livingbase, it fails
to write a headyaw byte, and everything will be derped for that packet.

Fixes #499, but probably a bunch of others.
Wrap the server description box a little bit shorter. Stops the overlapping. Closes #489