Git merges in Moodle 2.7.11 by Eloy Lafuente (stronk7)

commit 364bcdcd10ea96a9b809c0d31d8174e3ec37b5a2
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Fri, 16 Oct 2015 18:51:05 +0800
Tag:    v2.7.11

Merge branch 'install_27_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_27_STABLE