Merge branch 'install_310_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_310_STABLE

Merge branch 'install_310_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_310_STABLE

Merge branch 'MDL-71060-310' of https://github.com/NashTechOpenUniversity/moodle into MOODLE_310_STABLE

Merge branch 'install_310_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_310_STABLE

Without this, people can craft URLs that other users might use not realising
what they do - and as a XSS vulnerability, it could do any number of things the
clicking-user has access to do on the site.

Change-Id: I82adc71e8706d8929011b4b24523d5b62b8ccea1

Merge branch 'MDL-70049-310_count_submissions' of https://github.com/agrowe/moodle into MOODLE_310_STABLE

because of changes in PHP8 the '' == 0 is no longer true and the error in the google api wrapper was discovered

See also 643b0cca.

 * The button to "Add group/grouping access restriction" under
   common module settings should only be present if corresponding
   availability plugins are enabled; and
 * Prevent the same button behaving as a submit button, which
   intercepted the user hitting return in the form and added a
   restriction without deliberate action taken by the user.