Developer credits
Git merges in Moodle 2.7.18 by Eloy Lafuente (stronk7)
commit 6ee651714249589216687de7c442d98ac2ecf384 Author: Eloy Lafuente (stronk7) <stronk7@moodle.org> Date: Sun, 08 Jan 2017 18:04:10 +0800 Tag: v2.7.18 Merge branch 'install_27_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_27_STABLE