* Change public accounts pages to mount the web UI
* Fix handling of remote usernames in routes
- When logged in, serve web app
- When logged out, redirect to permalink
- Fix `app-body` class not being set sometimes due to name conflict
* Fix missing `multiColumn` prop
* Fix failing test
* Use `discoverable` attribute to control indexing directives
* Fix `<ColumnLoading />` not using `multiColumn`
* Add `noindex` to accounts in REST API
* Change noindex directive to not be rendered by default before a route is mounted
* Add loading indicator for detailed status in web UI
* Fix missing indicator appearing while account is loading in web UI
* Refactor shouldUpdateScroll passing
So far, shouldUpdateScroll has been manually passed down from the very top of
the React component hierarchy even though it is a static function common to
all ScrollContainer instances, so replaced that with a custom class extending
ScrollContainer.
* Generalize “press back to close modal” to any modal and to public pages
* Fix boost confirmation modal closing media modal
