This patch does the following:-
Start using proper key for course report node
Allow admin tools to hook into course navigation
Original issue - MDL-46131
Under certain conditions, coding exception is thrown when fetching items from
the navigation bar. The patch prevents them. See more details in the tracker.
* Navigation/settings now show best available option.
* Resorting categories works now for limited access user.
* Display of up and down arrows corrected.
* Checkboxes no longer displayed if an action can't be performed.
* Implemented a new course and category management page.
* Deprecated the old management interface.
* Unit tests to cover the new API and core functions.
* Behat tests to cover the new interface.
* Added new constant: MOD_SUBTYPE_NO_CHILDREN
* When MOD_SUBTYPE_NO_CHILDREN is returned from xxx_get_types()
then default display is used for activity chooser.
* Updated mod/upgrade.txt
* Removed dead code from navigationlib.php instead of updating
it for new behavior of xxx_get_types
* Updated lib/upgrade.txt
List of changes:
* New OOP API using PHP namespace \core\session\.
* All handlers now update the sessions table consistently.
* Experimental DB session support in Oracle.
* Full support for session file handler (filesystem locking required).
* New option for alternative session directory.
* Official memcached session handler support.
* Workaround for memcached version with non-functional gc.
* Improved security - forced session id regeneration.
* Improved compatibility with recent PHP releases.
* Fixed borked CSS during install in debug mode.
* Switched to file based sessions in new installs.
* DB session setting disappears if DB does not support sessions.
* DB session setting disappears if session handler specified in config.php.
* Fast purging of sessions used in request only.
* No legacy distinction - file, database and memcached support the same functionality.
* Session handler name included in performance info.
* Fixed user_loggedin and user_loggedout event triggering.
* Other minor bugfixing and improvements.
* Fixed database session segfault if MUC disposed before $DB.
Limitations:
* Session access time is now updated right after session start.
* Support for $CFG->sessionlockloggedinonly was removed.
* First request does not update userid in sessions table.
* The timeouts may break badly if server hosting forces PHP.ini session settings.
* The session GC is a lot slower, we do not rely on external session timeouts.
* There cannot be any hooks triggered at the session write time.
* File and memcached handlers do not support session lock acquire timeouts.
* Some low level PHP session functions can not be used directly in Moodle code.
