Git commits in Moodle 3.11.0 by Eric Merrill

commit c88ad5c182f24cfe2e998999f29957f29ac22b51
Author: Eric Merrill <merrill@oakland.edu>
Date:   Fri, 09 Apr 2021 03:20:24 +0800
Tag:    v3.11.0-beta

MDL-52724 editor_atto: Scrub atto html for invalid ol, ul, and li tags

commit 14c905a41e5c5129ba2f5d16d80cbc1658c115fa
Author: Eric Merrill <merrill@oakland.edu>
Date:   Fri, 04 Dec 2020 23:43:46 +0800
Tag:    v3.11.0-beta

MDL-70409 chat: Use require_once to import lib.php