Further consider upgrade behavior

[ctrlaltf24]

Keeping in mind the priority not to break installations, how can we with a reasonable degree of safety roll out updates?

It would be nice if we could respect the user's choice on the automatic resource downloads setting.

For now in-app updates are disabled, obviously we cannot keep it like this. Either find a way to handle the update ourselves, or wait for Faithlife to hopefully apply the fix we need so we can let them do it again.