Apply newer HTML for permalink photo pages to HTML mockups.
Links should have anchor text; hide it with `text-indent` in CSS.
Remove unused CSS.
Make "sharer" links into flexible "ShareLinks" component.
Apply new "ShareLinks" component to text post types on HTML mockups.
Video auto-fit. (Manually do fe9aca56294a7ee1238d0c422a0cfc9eece6f070.)