Ref T301, keypad and infobar init themself and can be re-connect (to core)

src/blackgui/components/mainkeypadareacomponent.h

@@ -24,7 +24,6 @@
 #include <QString>
 
 class QPushButton;
-class QWidget;
 
 namespace BlackMisc { namespace Simulation { class CSimulatedAircraft; } }
 namespace Ui { class CMainKeypadAreaComponent; }
@@ -96,6 +95,9 @@ namespace BlackGui
             //! Disable button for some (short) time to avoid double click
             void disableButtonBriefly();
 
+            //! Update values
+            void update();
+
             QScopedPointer<Ui::CMainKeypadAreaComponent> ui;
             BlackMisc::CIdentifier m_identifier { "MainKeypadAreaComponent", this };
         };