flake8
passed.
JSHint
passed.
Add release notes for Djblets 0.9.8.
Review Request #9023 — Created June 18, 2017 and submitted
This is a small release that contains only a couple internal
packaging-related changes (which don't affect consumers) and a backport
of Django 1.8's URLValidator.
Built the docs and tested that the URLValidator link went to the right
place.
