Author: Jun Pataleta
MDL-85902 course: Convert activity navigation to a navigation landmark
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8c1fe313709c0d6368379b19aa3195d7446aab21
http://github.com/moodle/moodle/commit/8c1fe313709c0d6368379b19aa3195d7446aab21
+ 4.5 en [activitynavigation,core_course]