Ref T447, info area

* force floating windows on top "allFloatingOnTop()"
* slots -> normal functions
* use BLACK_VERIFY to avoid "shutdown" in release build, possible reason for Ref T334

src/blackgui/components/maininfoareacomponent.h

@@ -113,7 +113,6 @@ namespace BlackGui
             //! Display console
             void displayConsole();
 
-        public slots:
             //! Toggle floating of given area
             void toggleFloating(InfoArea infoArea) { CInfoArea::toggleFloatingByIndex(static_cast<int>(infoArea)); }