This contains the remnants of the "publisher" app. It was built on
GopherJS, though, which hasn't been keeping up with upstream Go for
years, so the publisher no longer builds.
The publisher application serves and renders items published by Perkeep.
That is, items that are children, through a (direct or not) camliPath relation,
of a camliRoot node (a permanode with a camliRoot attribute set).