Git commits in Moodle 3.0.7 by Henning Bostelmann

commit 0c8a667aa96c5d167600a72ca79bfb879326c4a1
Author: Henning Bostelmann <henning.bostelmann@york.ac.uk>
Date:   Fri, 11 Nov 2016 00:33:58 +0800
Tag:    v3.0.7

MDL-55994 blog: Resolve warning messages in RSS feed generation