Author: Peter Dias
MDL-72413 core: Introduce new header component to render standard items
New activity header to render common module items in a centralised location.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a2d8ac6eeaf936f92ebaa5c3297cf4c2578d4fc7
http://github.com/moodle/moodle/commit/a2d8ac6eeaf936f92ebaa5c3297cf4c2578d4fc7
+ 4.0 en [additionalcustomnav,core]