Minor adjustments of update time UI, allow to reset values

Follow up of refs #814

src/blackgui/components/settingsviewupdatetimes.h

@@ -32,7 +32,7 @@ namespace BlackGui
             explicit CSettingsViewUpdateTimes(QWidget *parent = nullptr);
 
             //! Destructor
-            ~CSettingsViewUpdateTimes();
+            virtual ~CSettingsViewUpdateTimes();
 
         private slots:
             //! Slider changed
@@ -41,6 +41,9 @@ namespace BlackGui
             //! Settings have been changed
             void ps_settingsChanged();
 
+            //! Reset all update times
+            void ps_resetUpdateTimes();
+
         private:
             QScopedPointer<Ui::CSettingsViewUpdateTimes> ui;
             BlackMisc::CSetting<BlackGui::Settings::TViewUpdateSettings> m_settings { this, &CSettingsViewUpdateTimes::ps_settingsChanged }; //!< settings changed