QT Merit List. Update the status of all applications involved

[warrensearle]

We need to ensure that all applications involved in the 'First Test' are given the correct status. This task is to refactor existing code to ensure we support the following rules:

Did not take any of the tests
noTestSubmitted

Took only one out of the two tests (no matter whether they passed or failed)
qualifyingTestFailed

Failed one or both of the tests
qualifyingTestFailed

Overall z score was below the pass mark
qualifyingTestFailed

Overall z score was equal or above the pass mark
qualifyingTestPassed

Overall z score was below the pass mark but they've been overridden to have a Pass (e.g. EMP, tech glitch)
qualifyingTestPassed

Overall z score was above the pass mark but they've been overridden to have a Fail (technically possible but not sure this would ever really happen)
qualifyingTestFailed

Note that whilst each of the CAT and SJT tests are being scored and marked as pass/fail applications may temporarily end up with one of the following statuses:
criticalAnalysisPassed
criticalAnalysisFailed
situationalJudgementPassed
situationalJudgementFailed

Completion of the QT Merit List should ensure that all applications end up in one of the following three statuses (unless they already withdrew):
qualifyingTestPassed
qualifyingTestFailed
noTestSubmitted