Git commits in Moodle 3.4.4 by Sergio Rabellino

commit 328ec4459f59a98a4fda7e68f94582f852571903
Author: Sergio Rabellino <sergio.rabellino@di.unito.it>
Date:   Thu, 28 Jun 2018 15:25:32 +0800
Tag:    v3.4.4

MDL-61403 filter: Fix for the nolink tag ignored