Unbreak copy buttons.

I'm a doofus.

Bump CDN tag.

Bump CDN tag.

Always use HTTPS URLs.

Hide inaccurate stats columns.

RawGit dev requests are now fronted by CloudFlare, so the detailed
request stats are no longer accurate.

Modernize CSS. No more Pure.

Don't allow Urls for releases

Merge branch 'master' of github.com:rgrove/rawgit

URL formatter: Don’t generate broken gist URLs.

Be smarter about rejecting invalid repo URLs too.