Make setup method of MainDialog class private

apps/launcher/maindialog.hpp

@@ -50,7 +50,6 @@ namespace Launcher
         explicit MainDialog(QWidget *parent = 0);
         ~MainDialog();
 
-        bool setup();
         FirstRunDialogResult showFirstRunDialog();
 
         bool reloadSettings();
@@ -65,6 +64,8 @@ namespace Launcher
         void wizardFinished(int exitCode, QProcess::ExitStatus exitStatus);
 
     private:
+        bool setup();
+
         void createIcons();
         void createPages();