QmlProfiler: manage receiving trace after app stopped

Change-Id: I97409748ebac3ee8af3690f2d84d3038638a3419
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/qmlprofiler/qmlprofilertool.h

@@ -85,6 +85,7 @@ public slots:
     void profilerStateChanged();
     void clientRecordingChanged();
     void serverRecordingChanged();
+    void clientsDisconnected();
 
     void recordingButtonChanged(bool recording);
     void setRecording(bool recording);