Rake task to bulk insert submission questions.
Rake task to bulk insert submission questions.

Populate course_assesssment_submission_questions.
Run in the background so the final switch to submission_questions won't
take so long.

[ci skip]

cysjonathan/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,cysjonathan/coursemology2,Coursemology/coursemology2,cysjonathan/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2