Fix the Cookie Bug on Supervisor Portal

[ojmakinde]

If you are currently on a term, A, and reset your dev environment or switch to another term, B, an ajax error arises. My suspicion is that LSF caches the term in an attempt to load data on a landing page. Problem is, if a term, say Summer 2025, exists on prod-backup but not on development, that becomes a problem, and cookies need to be cleared.

Possible solutions:

• We can stop caching when in development or staging.
• We can add conditional checks to delete cache if error arises and use new parameters in the Supervisor Portal to load the query

[BrianRamsay]

This is likely related to us storing the current term in the session check out (app/__init__.py), so we need to check and make sure that the term in the session still exists

[BrianRamsay]

Fix datatables term switching bug