Git commits in Moodle 3.6.3 by VinhLe

commit 0b4bb56b4d8679574db0da665ac8516dc4f6b253
Author: VinhLe <Vinh.LeThe@Nashtechglobal.com>
Date:   Thu, 03 Jan 2019 11:48:59 +0800
Tag:    v3.6.3

MDL-64469  Question bank: Change link questions in category question.

commit 173d968f87f2dd31950427a0d2621fdd710ad2ab
Author: VinhLe <Vinh.LeThe@Nashtechglobal.com>
Date:   Wed, 21 Nov 2018 14:35:42 +0800
Tag:    v3.6.3

MDL-64031 enrol_manual: Fix hard-coded list of user fields.