fix cohorts in create, and read, and update regular expressions to fix courses with periods not working in General commentable

loaded into the page in a data attribute instead of loaded on request via ajax.
The user profile page also does not provide facilities for adding
comments/responses, which I think would clutter the page too much.

Also removed some unused stuff from views.py.

course id for seed_permissions_roles, and also the script itself to tell you that.