Author: Juan Leyva
MDL-64337 tool_mobile: Add app promotion text in email notifications
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c6ebb024f28794f6aba406a9496597923635e6fb
http://github.com/moodle/moodle/commit/c6ebb024f28794f6aba406a9496597923635e6fb
+ 3.7 en [readingthisemailgettheapp,tool_mobile]