Rework Compositor

Improved surface handling and message communication

compositor-message/compositor-message.cpp

@@ -47,7 +47,7 @@ int CompositorMessage::sendMessage(QString msg, qint32 windowid, qint32 screenid
 
 void CompositorMessage::readData(void){
     QString message;
-    quint32 status;
+    qint32 status;
     quint32 value;
 
     qDebug() << "Server send data: " << socket->bytesAvailable();