Developer credits
Git commits in Moodle 3.3.5 by Carlos
commit c4f22db3151b939d2a0ad024ff2948b6ee10b016 Author: Carlos <carlos.escobedo@gmail.com> Date: Thu, 22 Feb 2018 17:53:51 +0800 Tag: v3.3.5 MDL-60547 message_popup: adding preventDefault at notification popover