Fix: Correctly nest `h-cite`s
As noticed in #989 (closed), the rendering of Twitter -contexts has been broken
when there are nested
h-cites, as the child element does not have a
h-cite, meaning a Microformats2 parser (i.e. for Bridgy) will
pick up the child post, too, which leads to me to posting correctly to
my site, but syndication interacts with the wrong content - which is
Next, update existing content to remove their soon-to-be-deleted syndication content.
Closes #989 (closed).