Author: Juan Leyva
MDL-60680 notifications: Include action buttons information
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2356454f21a8ddbc79abd367df674ed9941bc62f
http://github.com/moodle/moodle/commit/2356454f21a8ddbc79abd367df674ed9941bc62f
+ 3.7 en [accept,core]