Twenty Fourteen: first pass at CSS revamp, props iamtakashi. See #25592.

git-svn-id: https://develop.svn.wordpress.org/trunk@25788 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Thirteen: use correct font name in comment docs, props tenpura. Fixes #25593.

git-svn-id: https://develop.svn.wordpress.org/trunk@25789 602fd350-edb4-49c9-b593-d223f7449a82