Sanitized backend

backend/core/fixtures/testdata-core.json

backend/core/fixtures/testdata-groups.json

backend/core/fixtures/testdata-user.json

backend/core/forms.py

backend/core/static/css/custom.css

backend/core/static/res/brand.png

backend/core/templates/base.html

backend/core/templates/core/component/feedback_badge.html

backend/core/templates/core/component/feedback_card.html

backend/core/templates/core/component/message_box.html

backend/core/templates/core/component/tests_editor.html

backend/core/templates/core/feedback_form.html

backend/core/templates/core/index.html

backend/core/templates/core/r/feedback_list.html

backend/core/templates/core/r/progress_card.html

backend/core/templates/core/r/reviewer_base.html

backend/core/templates/core/r/reviewer_startpage.html

backend/core/templates/core/r/single_submission.html

backend/core/templates/core/r/student_list.html

backend/core/templates/core/r/student_submission_list.html