Git commits in Moodle 3.8.3 by Mark Nelson

commit 390a7cc8d26e0153fd26b57dfe41f8851b1cb5d8
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 06:19:19 +0800
Tag:    v3.8.3

MDL-68193 core: added new database_text_field_content_replaced event

commit 3aa10ddd4ffb043f513bdfa06b62337c159c6833
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 01:06:41 +0800
Tag:    v3.8.3

MDL-67886 core: check_database_schema() checks for missing indexes