Ref T592, minor tweaks

* style
* hide wip_CockpitComPanelShowHideBar initially
* sGui guarding
* function initialFloating() public so it can be explicitly called

src/blackgui/dockwidgetinfoarea.h

@@ -52,7 +52,6 @@ namespace BlackGui
         //! \remarks made public so other classes can nest this submenu
         virtual void addToContextMenu(QMenu *contextMenu) const override;
 
-    protected:
         //! \copydoc CDockWidget::initialFloating
         virtual void initialFloating() override;