Author: Adrian Greeve
MDL-71912 course modules: Toggle heading depending on navigation.
If the secondary navigation is on then the activity header does
not need to be displayed twice.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=7520614e26f3fe5aab2b8fdb633529c5c9387911
http://github.com/moodle/moodle/commit/7520614e26f3fe5aab2b8fdb633529c5c9387911
+ 4.0 en [enterchat,mod_chat]
+ 4.0 en [viewreport,mod_chat]