Auto Save and UX changes.

With version 1.278 we now have auto saves. The last 540 minutes of use in 3Dio is saves in a folder found in your app data. This should be helpful for crashes and other instances where things go haywire.

In another bonus tweak, when you click on an item in bundle browser it automatically loads the brush if you haven't yet, saving you from wondering "what just happened."

Thank you for your generous support and bug reports, they mean a lot!