created function defs for all commands
moved clients list into conns.py
moved send function into conns.py
command handling added, function for /dc complete
added need for the sending con to be passed in
fixed crash on client dc
moved msg parsing out of server.py
removed unneed function
added global default PASS for stopping the server
added functionality to message parser
added exit(0) for when the server sends '/dc' as the first 3 chars
Merge branch 'control-messages'