Use the handle as well to verify the freshness.

The field should check both the value and handle when checking an entry for "freshness" otherwise things like this can happen:

    Create entry:
    value = Just a title
    handle = just-a-title

... freaky error happens to `handle` value in DB and it becomes blank

Without patch the handle will remain blank:

    Edit entry:
    value = Just a title
    handle = 

With patch the handle will be regenerated:

    Edit entry:
    value = Title changed
    handle = just-a-title