Moved the first bunch of files

Makefile

backend/Makefile

core/__init__.py

core/admin.py

core/apps.py

core/grady_speak.py

core/migrations/0001_initial.py

core/migrations/0002_auto_20171110_1612.py

core/migrations/0003_student_matrikel_no.py

core/migrations/__init__.py

core/models.py

core/permissions.py

core/serializers.py

core/tests/__init__.py

core/tests/data_factories.py

core/tests/test_access_rights.py

core/tests/test_auth.py

core/tests/test_examlist.py

core/tests/test_factory_and_feedback.py

core/tests/test_student_page.py