Git commits in Moodle 3.7.6 by Mark Nelson

commit 47fe981b8e6313ad4ca4cd22809b7b206bd56af5
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 06:19:19 +0800
Tag:    v3.7.6

MDL-68193 core: added new database_text_field_content_replaced event


commit f524ec2aaa83961128d860ab12776c8ea1147e9c
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 01:06:41 +0800
Tag:    v3.7.6

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