Move 'mustache context' from globals.lisp to content files (content/)
Currently the titles of the rendered documents are defined in globals.lisp.
It'd be better to define a "header" section in the content files being rendered, which define the variables in the layout which need to be set to render a full HTML document. E.g.:
title: Common Lisp Generic Title for the FAQ ---
--- on a single line marks the end of the header.