Git commits in Moodle 3.1.7 by Ankit Agarwal

commit 548c5fa21e0b0d0a6cef90d98d75ca45f49c505a
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Wed, 21 Jun 2017 14:57:26 +0800
Tag:    v3.1.7

MDL-56565: core_message\helper was not present in 3.1, remove it


commit 106fa63926c20cebcb7f12ad94536fd7ab3cd083
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Tue, 13 Jun 2017 15:08:22 +0800
Tag:    v3.1.7

MDL-56565 forum: Add sitename as heading when there is nothing to display


commit 5176a91648c0f08f0750c9b2c45178294d98fbd5
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Wed, 17 May 2017 13:17:17 +0800
Tag:    v3.1.7

MDL-56565 forum: Make sure userfullname is not disclosed