Comment 1 for bug 1397989

This one is a beta blocker since it likely affects Mixxx 1.11.

We need to verify that a Mixxx 1.11 -> 1.12 beta -> 1.11 doesn't leave the user unable to start Mixxx 1.11 because we write a skin to the config that isn't available in Mixxx 1.11.

Also, we should fix this in Mixxx 1.12 in a nice way. What if we had a screenshot.png that every skin could provide and had a nice skin picker that showed the screenshots in a carousel?