Git commits in Moodle 3.1.6 by Grzegorz Ziółek

commit 52f391ceab36b0a0728693167c88a9172485aad6
Author: Grzegorz Ziółek <grzesiekz@gmail.com>
Date:   Mon, 20 Mar 2017 19:43:40 +0800
Tag:    v3.1.6

MDL-58325 config_log: Record changes in editor management to config_log.