Don't close URLs starting w/ "chrome:" or "data:".

"chrome:" because we can't link back to them easily from within an
extension.

"data:" because storing the URL has the potential to overload
localStorage capacity, in the case of data-URI'd images, etc.
Fix bug in that prevented clearing bankruptcies.
Fix bankruptcy-ordering bug.

Now prepending new bankruptcies to stored bankruptcies, instead of
trying to reverse the order on load.