Git commits in Moodle 3.6.4 by Jean-Michel Vedrine

commit 58b6b184b3a7e6d9c178186aa918216ab2bc43db
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Fri, 10 Aug 2018 00:31:36 +0800
Tag:    v3.6.4

MDL-62974 lesson: Suppress HTML font tags