This change has been made because autofocus has been confusing
to users of screenreaders because they orient themselves by
what is in focus. Moving it when the page loads without warning
can cause confusion and mean they miss parts of the page
before the point focus has moved to.
So now we will only turn on autofocus if there are no other
elements in the page that need attention than the search box.
If there is a search term when the page loads, a
statement about the results is added to the
searchbox label.
All subsequent searches are announced via an aria
live-region.
Changes those fields in the following forms:
- SearchByNameForm
- SearchUsersByEmailForm
- SearchUsersForm
- SearchNotificationsForm
Includes changes to templates that use this form
and associated tests.
