Author: David Mudrák
MDL-49377 admin: Recommend keeping the site updated to latest version
http://git.moodle.org/gw?p=moodle.git;a=commit;h=657cb5ab62392458d9312f66e7d7934ca4437377
http://github.com/moodle/moodle/commit/657cb5ab62392458d9312f66e7d7934ca4437377
+ 2.9 en [updateavailablerecommendation,core_admin]