Developer credits
Git commits in Moodle 3.4.2 by Carlos
commit 16e0ea970ede13a358f0c64e3842906856bedf4d Author: Carlos <carlos.escobedo@gmail.com> Date: Thu, 22 Feb 2018 06:36:03 +0800 Tag: v3.4.2 MDL-60547 message_popup: adding preventDefault at notification popover