MDL-46548 grades: Add warning to export form when users with no idnumber are excluded.
MDL-46548 behat: Prevent force file save as for some pages we want to test with behat.
MDL-46548 grades: Add behat test for csv export
MDL-46548 grades: Add behat test for xml export
MDL-46548 grades: Remove file upload tags
MDL-46548 grades: Add upgrade.txt for gradeexport plugins
MDL-46548 grades: Reorder grade export form.

Move the list of grade items to the top, and leave them expanded by default.