From the commit to the theme:

	Now I've connected Brid.gy and am starting to get more
	interactions with Webmentions, I need to start displaying these
	Webmentions for site viewers to see.

	For likes, we should render a facepile[0] because it doesn't
	matter as much how they've liked, just that they have.

	However for other webmentions, we do want to have a list of the
	author and a link to the webmention.

	For each of the webmentions, we want a separate partial that can
	be composed easily.

	Additionally, we can the partial's context to render a slice of
	webmentions.

Additionally, we want to pull a default of 100 webmentions per page, as
that should pick up plenty - at time of writing, the most webmentions
for a post is 34!

Closes #352.

[0]: https://indieweb.org/facepile