Fixed pre-existing connections crashing a server during restart take 2

I think I got all of the edge cases where a client that was connected before a server shutdown/crashed caused the server to crash immediately on restart/startup of the server. I forgot to pass the socket parameters for two of the function calls. I also added it the check for the new clear screen button.

I won't close issue #36 until this is live on draw.etherpad.org. Should* be good to upload it now.