Author: Laurent David
MDL-82297 core: Add notification to warn admins
* In Moodle 5.0 we will remove Chat and Survey module
and we will need to announce it beforehand
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fbbf8715ef6f86ac37ace6039bbdd0eb939a80f2
http://github.com/moodle/moodle/commit/fbbf8715ef6f86ac37ace6039bbdd0eb939a80f2
+ 4.5 en [importantupdates_content,core_admin]
+ 4.5 en [importantupdates_title,core_admin]