Wikilinks should be clickable in the public stoa

[flancian]

As pointed out by an anonymous user in the pad for anagora.org/index: [[wikilinks]] not being clickable in the stoa is sad.

[flancian]

Now we have a workaround for this: the stoa is [[hedgedoc]] based and anything you write there is automatically exported to the Agora as a 'full subnode' within ~one minute of writing. There it gets the full Agora treatment: wikilinks, go, push, pull all work as expected.