Improve auto export delay (or other approach) in case a delay is undesirable

Auto export always waits at least two seconds before export is done.

When stopping the application too fast after adding an essentials component, auto export might not have exported the required changes yet.

We could check to see if we can force an export OR we check on 'shutdown' whether the export event queue is non-empty and then first process this queue (before really shutting down)