Git commits in Moodle 2.7.13 by Krista Koivisto

commit ea8987644fdbbee291337263598b0c3c7bf27c36
Author: Krista Koivisto <krista@kittysec.org>
Date:   Thu, 04 Feb 2016 13:51:06 +0800
Tag:    v2.7.13

MDL-52774 ajax: Require authentication when getting nav branch