Significant string changes:
* withselectedusers_help, core - removing mention of 'Add a common note'
as the option no longer exists
* considereddigitalminor and digitalminor_desc, core - more
child-friendly wording
* configmessagingallusers, core_admin - clearer explanation
* auth_dbtype, auth_db - fixed broken link
Significant string changes:
* completionpass_help, gradetopassnotset in mod_quiz - grade to pass set
in quiz settings not gradebook
* namecolumnmissing,core_cohort - fixing incorrect message about adding
users to a cohort
This reduces the amount of code to an already confusing logout.php
file and prevents conflicts if someone else happens to be using
the same function name in a file.
* Use the Moodle 2+ {sessions} table, and decode the session
correctly using session_decode (adodb_unserialize is deprecated).
* Kill all user sessions using \core\session\manager's
kill_user_sessions.
The output strings for the Test Settings function were hard-coded English
strings. They've been changed to standard language strings which can be
translated and maintained via AMOS.
Significant string changes:
* publishstate_help, core_notes - including GDPR guidance
* contactdataprotectionofficer_desc, tool_dataprivacy - removing mention
of link on privacy policy page as it is not yet implemented