Tweaks to the associated signal tracking. Now there is a label that

tells you whether the parameters match the currently selected signal
or not.

re/newgraphdialog.h

@@ -33,6 +33,7 @@ private slots:
 
 private:
     bool eventFilter(QObject *obj, QEvent *event);
+    void checkSignalAgreement();
 
     Ui::NewGraphDialog *ui;
     DBCHandler *dbcHandler;