FIX: Allow users to unsubscribe to digests while not logged in if
`login_required` is set to true.
excludes self from quoted
FIX: escape input of forgot password form before rendering it back to you
Improve the unsubscribe to digest experience. Give a link in case it
fails, provide a different message if you are logged in as a different
user, increase expiry to 2 months from 1 week.
FIX: handle enter key with a better way on site setting string inputs