I didn't find the inspiration I'd have hoped for a...

# splitties

[louiscad]

I didn't find the inspiration I'd have hoped for a neat naming of the grouping artifacts (aka. packs), but I found inspiration to revamp the Preferences module in a way that doesn't break source compatibility. The changes I performed will allow easier integration in preferences UI without having to deal with unflexible xml (I'll make an example in the sample), and also, integration with Flow from #coroutines!