Feature request: update the app

Prompted me to give Jerboa a go after some time. I think it's useable enough now to switch over and stick with.

It's still massively behind sync in several areas obviously but it has most everything. Be good to have more UI options and a few other conveniences but the big stuff is there.

I did hedge on sync, just ad blocking the free version as the pro prices seemed a bit gouge-y but bear in mind the guy had his whole side hustle swiped away from him in a gross and upsetting manner!