Merge "Add DeleteUnknownPreferences hook"
authorjenkins-bot <jenkins-bot@gerrit.wikimedia.org>
Thu, 5 Apr 2018 22:55:30 +0000 (22:55 +0000)
committerGerrit Code Review <gerrit@wikimedia.org>
Thu, 5 Apr 2018 22:55:30 +0000 (22:55 +0000)

Trivial merge