a whole lotta work!!

- refactoring
- completely changed the tooling (adding elements)
- better re-use for more stable editing
- new elements
- ui adjustments
- LINT for stair-editing
- many more changes

MainWindow.h

@@ -6,6 +6,8 @@
 class MapView2D;
 class MapView3D;
 class QTreeView;
+class QStatusBar;
+class QLabel;
 class ElementParamWidget;
 class LayerParamWidget;
 class ActionWidget;
@@ -53,6 +55,9 @@ private:
 	ActionWidget* actionWidget;
 	ToolBoxWidget* toolBoxWidget;
 
+	QStatusBar* statusBar;
+	QLabel* statusBarText1;
+
 };
 
 #endif // MAINWINDOW_H