Pages in the nav bar (Calendar, Users, Messages, About, Tools) no longer show a big title. The highlighted nav button already says where you are, which is why Board and Recent looked fine. Screen readers still get a heading.
Pages outside the nav keep their title as the first line of their card, and the blank line above it is gone everywhere: Invites, Unread, thread pages, the tool pages.
Also: Calendar's Earlier/Later links moved into the month card, Messages is a plain list like Recent, the black square on About is gone (an icon with no picture), and a thread with no subject doesn't show its first line twice anymore.
Not in this one: Account still has its title above the card, Search is still bare, and Unread still shows three empty boxes when there's nothing new. They're listed as follow-ups in the PR.
