TP2000-1478: Missing measures check

[eadpearce]

TP2000-1478: Missing measures check

Why

• To reduce errors in workbaskets by adding a check to ensure every commodity code has at minimum a type 103 measure associated (Most Favoured Nation or MFN)

What

• Adds new tab layout design for workbasket checks
• New page where users can run the missing measures check and see results
• New database models MissingMeasuresCheck and MissingMeasureCommCode added
• Extra field added to WorkBasket model - missing_measures_check_task_id. Functions the same as rule_check_task_id
• The check blocks the publishing of the workbasket if it doesn't pass, like the business rules check
• The check runs asynchronously in a celery task
• The check can be stopped and re-run

Still to do

• Add green and red boxes to match latest design and business rules check page

Checklist

• Requires migrations? Yes
• Requires dependency updates? No