Author: Adrian Greeve
MDL-71092 navigation: Update secondary nav to show category context.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=67be3393bf05dc60055f40238f16419a83328e70
http://github.com/moodle/moodle/commit/67be3393bf05dc60055f40238f16419a83328e70
+ 4.0 en [categoryheader,core]