Get Handlebars to pull in ArchieML nested arrays for Globe editors

Working to allow Globe editors to maintain complicated topic/subtopic lists in Google Docs (for ease of writing), and pull those lists into a one-off project page with HandlebarsJS, the Globe's preferred templating lang.

[Archie](http://archieml.org/) lets you use Google Docs as a CMS. HandlebarsJS is a templating language -- it's one of a lot of templating solutions. Basically if you've ever seen {{this}} in an HTML file you have an idea of what it does.