Moodle 4.5 compatibility an rubref fix

v1.01

Fix behat tests to work with Moodle 4.5

Moodle 4.4 Compatibility

Confirmed to run with Moodle 4.4 and tested for PHP 8.2 compatibility. Support for rubric ranges and rubric flex

Grader update fix

Fix the issue that the grader was recorded as the last person who scrolled through the grading interface got marked as the grader.

BTEC

Removed jquery/datatables. Added BTEC support