Random disconnects

[jay-jlm]

Tested on master. Get randomly disconnected from the server even without joining a game:

websocket.js:111 WebSocket connection to 'ws://localhost:3000/socket.io/?EIO=3&transport=websocket&sid=Y_mWxtZ4Sr2-M2djAAAA' failed: Connection closed before receiving a handshake response

Sometimes it's proceeded by this error:

MyRenderer.js:395 Uncaught TypeError: Cannot read property 'position' of undefined
    at MyRenderer.updateOffscreenIndicator (MyRenderer.js:395)
    at MyRenderer.draw (MyRenderer.js:206)
    at renderLoop