Author: Amaia Anabitarte
MDL-72706 core_course: Change default value of Hidden sections setting
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1b1735f7638e6f3405d70ab984c6af5ea5af4c4b
http://github.com/moodle/moodle/commit/1b1735f7638e6f3405d70ab984c6af5ea5af4c4b
+ 4.0 en [hiddensections_help,core]
+ 4.0 en [hiddensectionscollapsed,core]