Fix links to posts attached to pings.
Add IndieAuth-ready web links
Fix User[...] work with scheme-less URLs
Simplify Pings listing
Display incoming ping sources to post author
Re-enable Turbolinks transition cache
Simplify Pings listing.
Support .lead paragraphs in post bodies.
Fix styling of "delete post" button.
CSS tweaks.
Rename "Friends" to "Following". Now optionally public.
Only display unfollow link when user can actually unfollow.