504: Update plan_504 method on student record to read EdPlan for Somerville #2315
Related to #2287.
Who is this PR for?
What problem does this PR fix?
What does this PR do?
To work around this, this PR adds a method to the
This also updates the JS function that decides about showing "504 plan" so that it is stricter, which isn't directly related to the server-side change (since the server-side change for Somerville keeps the same API with the UI).
Which features or pages does this PR touch?
Does this PR use tests to help verify we can deploy these changes quickly and confidently?