turns out the 'moment' plugin does a better job of manipulating and formatting dates than my furious, seething hack from last night did.

I could cry right now.
added url to `site` object. Neeeded for sitemap generators and things.
added .env to .gitignore. (still need to read about using .env)
added Masonry.js to archive layouts, as these will have all the thumbnails.
just reread the DocPad docs about collections. makes much more sense now.
optional second layer of nav links, for archive list pages.