Git merges in Moodle 3.1.11 by Eloy Lafuente (stronk7)

commit fdcf7fb3f66e446b2a946486b2a1677a179f3f93
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Sat, 17 Mar 2018 08:18:13 +0800
Tag:    v3.1.11

Merge branch 'install_31_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_31_STABLE

commit 7f5f07b68e5fe8bb3f4182893d577b340d2066c0
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Tue, 13 Mar 2018 06:51:49 +0800
Tag:    v3.1.11

Merge branch 'MDL-48501-mdl31' of git://github.com/jswebster/moodle into MOODLE_31_STABLE

commit 52c730014e4b2598122c2617c3399bdfa35d543f
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Mon, 29 Jan 2018 08:51:56 +0800
Tag:    v3.1.11

Merge branch 'wip-MDL-61242-31' of git://github.com/abgreeve/moodle into MOODLE_31_STABLE

commit 16ab239fb46dd22d030e6f0f10eeb51e1af80574
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Tue, 16 Jan 2018 09:17:39 +0800
Tag:    v3.1.11

Merge branch 'MDL-61204-31' of git://github.com/andrewnicols/moodle into MOODLE_31_STABLE