Orange/authoring DTD doesn't include journal-meta

 Wendell's Oxygen framework's template is for an authoring document.

The authoring DTD doesn't include journal-meta, so the current stylesheet produces an empty fo:table-cell, but FOP blows up on an empty fo:table-cell, so this change inserts boilerplate content when there's no journal-meta.

Arguably it's a problem with the XSL-FO spec and/or FOP's literal interpretation of it -- since Antenna House has no such trouble -- but it's easier to change this stylesheet that either of those.