MapView scale less detailed levels on current level feature

libs/map/mapview.h

@@ -64,6 +64,7 @@ private:
 	void drawBackground();
 	void drawItems(QPainter & p);
 	void checkZoom();
+	void checkCenter();
 	void zoomLevelChanged(int new_level);
 	void updateZoomLevel();
 	void updateViewRect();