Purger - new small app for clearing old bup backups

I tried my best to suppress instincts that want perfection and just come up with a simple design that gets the job done. I think it came out well. Please have a look. Especially UI stuff, button caption and such. I really want this UI to be intuitive, user must feel confident when doing things like this. And that the user should also not be afraid to click the "Remove backups" button the first time. Perhaps a less scary button caption would be good, since nothing will actually be removed when clicking.. it just opens this little app.

I'm thinking that later this app can be improved to not just dump output from bup into a text widget but instead, capture, filter, translate. It can also be improved in the formatting of snapshot dates according to locale. And perhaps grouping them to different age brackets. But all that later.