Git commits in Moodle 3.5.3 by Huong Nguyen

commit fee8383edc6694b956f2bda975a627451ebcdb20
Author: Huong Nguyen <huongnv13@gmail.com>
Date:   Thu, 13 Sep 2018 15:15:52 +0800
Tag:    v3.5.3

MDL-63354 Group: Rollover text on long group names is not consistent