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
When parsing and validating the value of the Digital age of consent
(agedigitalconsentmap) field, we want to load all country codes. Not
just the ones whitelisted for drop down menus that users can choose
from.