Revert "Inline head.js."
Revert "Inline head.js."

This reverts commit 0f03f98c5d1477048c0d05ad1d4724eb922ebf13.

matthiasbeyer/wiki.template,rxfork/jekyll-and-zurb,rxfork/jekyll-and-zurb,razor-x/jekyll-and-zurb,matthiasbeyer/wiki.template,razor-x/jekyll-and-zurb,razor-x/jekyll-and-zurb,matthiasbeyer/wiki.template