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.
Added new files to the ingnored list.
Merge branch 'master' of git://github.com/imathis/octopress
Updated the theme.
Added a custom category list.
Corrected the broken syntax highlighting.
Updated for a custom aside.