Git commits in Moodle 3.11.x by David Matamoros

commit d73cd7c778dce10a601880e75778b6c03d76d922
Author: David Matamoros <davidmc@moodle.com>
Date:   Tue, 20 Apr 2021 17:53:54 +0800
Tag:    v3.11.0-beta

MDL-70902 libraries: upgrade to version 6.4.1 of TCPDF

commit fc02628620721510afe336fa2a50e519fe19da2e
Author: David Matamoros <davidmc@moodle.com>
Date:   Mon, 29 Mar 2021 16:11:05 +0800
Tag:    v3.11.0-beta

MDL-71017 tool_oauth2: Small fixes on Oauth 2 services UI and tests

commit 52627c5f0f4907e5ee68010526672fe1853ee2a5
Author: David Matamoros <davidmc@moodle.com>
Date:   Fri, 19 Feb 2021 00:16:36 +0800
Tag:    v3.11.0-beta

MDL-70910 contentbank: fix for using contentid not validated

commit f648e9d0facdfab1c2710f94047f531df4afb4f1
Author: David Matamoros <davidmc@moodle.com>
Date:   Thu, 18 Feb 2021 22:53:02 +0800
Tag:    v3.11.0-beta

MDL-70941 contentbank: fix empty equality check when renaming content

commit 873e8961e5151cda941c6061a40149d202656c2d
Author: David Matamoros <davidmc@moodle.com>
Date:   Sun, 22 Nov 2020 23:22:03 +0800
Tag:    v3.11.0-beta

MDL-69411 core_message: Fix return structure for empty result set

commit 10fa98fcf43d071f68f5ddf5a6b52672e6d26cc8
Author: David Matamoros <davidmc@moodle.com>
Date:   Sat, 21 Nov 2020 00:09:37 +0800
Tag:    v3.11.0-beta

MDL-63683 enrol: Fix plugin settings when no role has student archetype