- Turn sources into a list items rather than forms, only the inside is an actual form.
- Turn the source titles into headings.
- Mark the edit button as collapsed.
- Add a placeholder when no sources are present.

This would just potentially clutter the accessibility tree.

Also do not show any other content when loading.

It should fall back to font size.

This should have been done in 0432fed

For screen readers.

This was missed in 0432fed

The menu element is removed from DOM by the time the deletion handler
run so jQuery’s `parents()` function will not be able to locate the form.

Let’s store an explicit reference to the form and pass it to the event handler.