Improved context sensitive help

- create utilty function CGuiApplication::triggerShowHelp
- this function also uses "QWhatsThis::leaveWhatsThisMode" which solves the problem that the help was not properly called a 2nd time
- adjusted using classes

src/blackgui/components/copyconfigurationdialog.cpp

@@ -9,6 +9,7 @@
 
 #include "copyconfigurationdialog.h"
 #include "ui_copyconfigurationdialog.h"
+#include "blackgui/guiapplication.h"
 
 namespace BlackGui
 {
@@ -49,5 +50,11 @@ namespace BlackGui
         {
             ui->comp_CopyConfiguration->setWithBootstrapFile(withBootstrapFile);
         }
+
+        bool CCopyConfigurationDialog::event(QEvent *event)
+        {
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
+        }
     } // ns
 } // ns