MDL-45452 Course completion report: "Excel-compatible" output should have Excel-compatible dates
Merge branch 'master' of git://git.moodle.org/moodle
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
'MDL-20365_salted_passwords_for_external_db WIP