fix old style gist url not found issue
Fix Disqus over https.

  Forcing http:// as protocol will make Disqus fail when server over
  https for security reasons.
Merge pull request #1384 from kAworu/fix-disqus-over-https

Fix Disqus over https.
Merge branch 'fix-gist-plugin' of git://github.com/aleiphoenix/octopress into aleiphoenix-fix-gist-plugin

* 'fix-gist-plugin' of git://github.com/aleiphoenix/octopress:
  fix old style gist url not found issue
Clean up Gist redirection.
Error handling FTW
Merge pull request #1385 from imathis/aleiphoenix-fix-gist-plugin

Handle Gists returning 302's
Merge remote-tracking branch 'octopress/master' into source