Revert "Update default.html"

This reverts commit aee9d182cd000ed66bfcaab487adca7425796ed0.
Revert "Update post.html"

This reverts commit eb5e89308e9e08e5d18a782976246ce1a2a25110.
Revert "Changed disqus for moot.it in posts.html"

This reverts commit 778a3dde20cff7ae09f0c18cd2bdb5279c509252.