_header and _footer and now stylus partials; no more header-footer plus nav nonsense; removed a bunch of unused styles from these too.
Use accept-language header to determine which big-number separator to use: commas for English, dots for Italian, spaces for French, etc.
Conflicts:
	facets/company/show-homepage.js
	package.json
start working on the homepage. specifically, stats
Conflicts:
	templates/partials/download-counts.hbs
remove a relic from hljs
primitive new package display on homepage
fixes signup form email bug (fixes #151)
slightly better error messaging on signup