Fix to allow overwrite mode to cause screen refreshing. The refreshes

in overwrite mode will be faster than the normal GUI refresh rate.
This could be handy for catching momentary messages.

canframemodel.cpp

@@ -420,6 +420,11 @@ void CANFrameModel::addFrames(const CANConnection*, const QVector<CANFrame>& pFr
     {
         addFrame(frame);
     }
+    if (overwriteDups) //if in overwrite mode we'll update every time frames come in
+    {
+        beginResetModel();
+        endResetModel();
+    }
 }
 
 void CANFrameModel::sendRefresh()