Delete Offering

[ProfZijlstra]

I created the initial UI for this, but then realized most of the work will be writing all the code to clean-up the back-end.

Deleting an offering also means:

• Deleting the filesystem videos directory for that offering (includes PDFs)
• Deleting each day for that offering

Deleting a day also means:

• Deleting all the possible views on that day
• Deleting all the quizzes on that day
• Deleting all the class_sessions on that day

Deleting a quiz also means:

• Deleting all the quiz_events for that quiz
• Deleting all the questions for that quiz

Deleting a question also means:

• Deleting all the answers for that question

Deleting a class_session also means:

• Deleting all the attendance_exports for that session
• Deleting all the meetings for that session

Deleting a meeting also means:

• Deleting all the attendance for that meeting
• Deleting all the attendance_imports for that meeting

[ProfZijlstra]

Just realized I could just make a soft delete by adding an active flag on offering...

[ProfZijlstra]

Just pushed the soft delete solution