tests corrections and inheritance order refactored

TESTING.md

newsbox/models.py

newsbox_cms/models.py

newsbox_hvad/models.py

newsbox_hvad/views.py

test_requirements/django-1.6_cms-3.0.txt

tests/myapp/fixtures/tests_data.json

tests/myapp/models.py

tests/myapp/tests.py

tests/myapp_all/fixtures/tests_data.json

tests/myapp_all/models.py

tests/myapp_cms/fixtures/tests_data.json

tests/myapp_cms/models.py

tests/myapp_hvad/fixtures/tests_data.json