MDL-46643 calendar: improved tab order of calendar detail pages
MDL-46552 session: add support for multiple servers in memcached session driver
MDL-46315 themes: Fixed display inconsistancy with help modals
MDL-46646 course: regression in behat tests

Newly introduced unit tests are failing because the timestamps used are
too large.  Example timestamps were 11 characters long instead of 10.
MDL-45932 enrol_imsenterprise: Implement Scheduled Task for IMS Enrolment plugin.
MDL-46692 forum: fix defaultpreference_trackforums to not depend on forum settings

Existence of admin settings must not depend on other settings,
especially not from other plugins.

In any case somebody should cleaup the preference mess and allow
plugins to setup user preferences instead of hardcoding everything in
core.
MDL-46524: Auto-create groups from existing group or grouping membership
MDL-46565 gradereport_*: renamed report classes to match parent
MDL-46600 core_grades: made it explicit in the error message that a failed grade import means nothing was imported.
MDL-46470 bootstrapbase: support linkedwhenselected attribute for tabs
MDL-44015: EditPDF scrolls instead of drawing on iOS
MDL-46697 gradebook: Only count active users when needed (and only id)

The code only needs the id column to perform its count. On courses with a lot of users
fetching the whole user record for them all easily adds up to several hundred MB of
memory.
MDL-46676 profilefield_datetime: Use moodle time API
MDL-46448 core_rating: now only formats rating aggregate if user can see it
MDL-46561 session: use full session validation in \core\session\manager::session_exists()
MDL-21042 report_security: don't display warning for riskbackup unnecessarily
MDL-46681 qtype_multichoice: disabled unused options

For questions set to 'One answer only', the 'Clear incorrect responses'
and 'Show the number of correct responses' hint options make not sense,
and are not used. Hence we disableIf them.
MDL-46480 fix get_htmlelement_size() to deal with hidden or non-block elements
MDL-45759 javascript: Handle setting of the confirm button fields post-init
MDL-46718: Return user to last accessed page when quick grading