This commit migrates the data calculation logic for the GradeSummary
table, which was previously in the frontend-app-learning.
This commit also introduces a new visibility option for assignment
scores: “Never show individual assessment results, but show overall
assessment results after the due date.”
With this option, learners cannot see question-level correctness or
scores at any time. However, once the due date has passed, they can
view their overall score in the total grades section on the Progress
page.
These two changes are coupled with each other because it compromises
the integrity of this data to do the score hiding logic on the front
end.
The corresponding frontend PR is: openedx/frontend-app-learning#1797
4afff6ef5c