Helps users enter wildcarded disabled-site URLs.

1. Adds example www.bozo.com/* so users realize they need trailing
"*" to match all pages.
2. If entered URL doesn't contain "*", it now offers to append "*".
Fixed #156: support non-US ebay sites.

Supports ebay.es, ebay.fr, ebay.com.au, ebay.com.uk, etc.
Thanks to J.G. for the tip.