Git commits in Moodle 3.8.3 by Juan Leyva

commit dcc4bfa042d991e78120c6adb1862e721603bfd6
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Sun, 12 Apr 2020 06:13:25 +0800
Tag:    v3.8.3

MDL-68293 mobile: Update language strings to mention new app plans