ELIS-8647: Add 'required' field specification for datahub version1elis course import curriculumcourse field.
ELIS-8669: Report enrolment error when DataHub version1 enrolment import fails ro enrol user.
ELIS-8767: Moodle HQ requested changes for acceptance into Moodle Plugin DB
ELIS-8785: Don't use Course defaults in version1 course import if template specified.
ELIS-8868: Delete temporary file after a line-ending or empty file failure
ELIS-8868: Also remove temp file on Bad File Encoding failures.
ELIS-8920: Fix Datahub version1elis user import new user welcome message error 'Cannot send email to null user'.
ELIS-8949: Initialize scheduled task for dhfile_log to compress datahub log files.
ELIS-8989: Update version files: DB version (for main components), release & build dates.