I need to sleep on the right gutter problem. The issue is that the output that the tool generates sets the right and left margins to `auto` in order to center the page in the container. When the page is scaled via a CSS transform, the container's width is scaled based on the transform (e.g. 200%: 1200px --> 2400px) but the page itself doesn't change its pixel dimensions (that's the way scale transforms work). So you end up with a, e.g., 1024px page within a 2400px container and the auto left and right margins are obviously huge. I can hide the extraneous left margin by applying a translate transform, but I haven't figured out how to remove extraneous right margin. It is a cosmetic problem only, FWIW, so perhaps we could go ahead and start QA with this issue as a known bug.

Other than this problem, the only other outstanding issues that I know about (I'm probably missing some) are i18n/l10n and hooking it into the server side. I haven't done any cross-browser testing either yet. I'll go ahead and update my fork in case anyone has the time to give it a once-over.