Is this going to mess up now if we publish without a title? S3 will use the `req.pageTitle` to determine which URL to use, https://github.com/ScottDowne/thimble.webmaker.org/blob/c02fcb6b7d52aff8d95b51670612e19886db690d/lib/middleware.js#L217, so if we keep this blank when there is no title, does it generate the page on / ?