Author: Amaia Anabitarte
MDL-87283 core_course: Create a new page for restricted activities
Only the activities with visible restrictions will be available.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fc36bec9743cd65e7b3d7052a43389b2a059d7b7
http://github.com/moodle/moodle/commit/fc36bec9743cd65e7b3d7052a43389b2a059d7b7
+ 5.2 en [restrictedtitle,core_course]