Git commits in Moodle 3.1.16 by David Mudrák

commit 74677577001933d4c99b89282f17793a84c0ec97
Author: David Mudrák <david@moodle.com>
Date:   Fri, 16 Nov 2018 03:44:03 +0800
Tag:    v3.1.16

MDL-63994 auth_cas: Include the login token in the simulated login form

commit ee5065676d0f0413ecffda3b4672711a1c1fca68
Author: David Mudrák <david@moodle.com>
Date:   Fri, 16 Nov 2018 03:35:46 +0800
Tag:    v3.1.16

MDL-63994 login: Improve the logintoken param input

commit 04919a422bc7e948d9a67f046944afd54eef87b5
Author: David Mudrák <david@moodle.com>
Date:   Fri, 16 Nov 2018 03:27:58 +0800
Tag:    v3.1.16

MDL-63994 login: Clarify inline comments on loginpage_hook() usage