Fixed possible race condition when disconnecting

java.lang.NullPointerException
at com.codebutler.android_websockets.WebSocketClient.run(WebSocketClient.java:151)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.os.HandlerThread.run(HandlerThread.java:60)
Now using the traffic lights from the official web page
Merge branch 'master' of github.com:bladenight/bladenightapp-android