Git commits in Moodle 2.9.4 by Dani Palou

commit 45e37067f61afe5c356cffeb40ffa512852308dd
Author: Dani Palou <dani@moodle.com>
Date:   Tue, 27 Oct 2015 23:09:55 +0800
Tag:    v2.9.4

MDL-51935 wiki: Add missing strings in wiki