* Verify link ownership with rel="me"
* Add explanation about verification to UI
* Perform link verifications
* Add click-to-copy widget for verification HTML
* Redesign edit profile page
* Redesign forms
* Improve responsive design of settings pages
* Restore landing page sign-up form
* Fix typo
* Support <link> tags, add spec
* Fix links not being verified on first discovery and passive updates
* Admin: Show unconfirmed email address on account page
* Admin: Allow staff to change user email addresses
* ActionLog: On change_email, log current email address and new unconfirmed email address
