Git commits in Moodle 3.8.0 by Mitxel Moriana

commit c345aa721c6eb31bb1a5a761d3eddfaca0924296
Author: Mitxel Moriana <mitxel@tresipunt.com>
Date:   Mon, 16 Sep 2019 10:30:00 +0800
Tag:    v3.8.0-beta

MDL-64739 core_analytics: New db field for model contexts