Add option to disable feature for checking for a new update

(cherry picked from commit d26dd55dba066aa4884b00b55173597f49309f0d)

src/widgets/capture/capturewidget.cpp

@@ -808,6 +808,10 @@ void CaptureWidget::initPanel()
 void CaptureWidget::showAppUpdateNotification(const QString& appLatestVersion,
                                               const QString& appLatestUrl)
 {
+    if (!ConfigHandler().checkForUpdates()) {
+        // option check for updates disabled
+        return;
+    }
     if (nullptr == m_updateNotificationWidget) {
         m_updateNotificationWidget =
           new UpdateNotificationWidget(this, appLatestVersion, appLatestUrl);