Don't let "Update completed successfully" popup break ChocoButler!

[FlyMyPG]

This popup is often hidden by other windows by the time an update completes, and as a result halts ChocoButler functionality, making it totally unable to continue checking for updates.

The other ChocoButler popups are fine. Only this one poses a problem.

There are multiple ways to address this:

1. Eliminate the popup. Success is shown when the ChocoButler tray icon reverts its color. Use popups for update errors!
2. Include a settings entry to disable this popup.
3. Give the popup a timeout.
4. Force it to be permanently on top (in view).
5. Make it non-modal.

You get the idea. Never let ChocoButler stop!