Git merges in Moodle 3.4.x by Sara Arjona

commit 53392df21906dcf744d81c8275175c4e43178031
Author: Sara Arjona <sara@moodle.com>
Date:   Fri, 08 Mar 2019 18:03:06 +0800
Tag:    v3.4.8

Merge branch 'install_34_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_34_STABLE


commit 734ce33b99d34b8c5c16b82b27515cf227b52538
Author: Sara Arjona <sara@moodle.com>
Date:   Fri, 11 Jan 2019 00:51:42 +0800
Tag:    v3.4.7

Merge branch 'install_34_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_34_STABLE