LDEV-4746 Set default mark when QB'ing MCQ questionsA default mark of 1 was set during question creation in authoring. Sincenow we import instead of create, it is better to also do it duringmigration.
LDEV-4813 Use tables only if a condition is providedIf tables are used and no condition which uses them is provided, a fullouter join is run. It takes ages to complete on a large instance.