Server relays movement commands to all clients.
Clients are now identified by the login username.
Merge branch 'master' of github.com:putty174/Swarch

Conflicts:
	Swarch/Player.js
	Swarch/server.js
	Swarch/swarch.js
Merge branch 'master' of github.com:putty174/Swarch

Conflicts:
	Swarch/Player.js
	Swarch/server.js
	Swarch/swarch.js
Players on client/server are now stored in maps indexed by their usernames.