Basic implementation of API endpoint closing after test end.
Fix UserTestObjectsAuthorization. Add test.
Adds test to check teachers can still access tests while disabled.
Adds wrapper for error handling to give cleaner error message.
Cleans up imports.
update student_testing_mixin to reflect fix for using the tests's total questions
update coachreport tests to reflect fixes on using a tests's total questions rather than the student's total attempts
display total_questions rather than total attempts in the coach report
Merge branch 'nalanda-rct3' into richard-test_shutoff
in tests: wait_for_element now waits for 5 seconds
lint student_progress.js
Merge pull request #8 from aronasorman/richard-test_shutoff

Richard test shutoff
in change unit tests: confirm dialog boxes
skip test_exam_mode_shut_out when running in travis
Merge pull request #2347 from rtibbles/test_shutoff

Test shutoff