applied pep8 for apps/tests/test_app_env_view.py.
applied pep8 in apps/tests/test_list_app_view.py.
appling pep8 for apps/tests/test_create_app_view.py.
applied pep8 for auth/tests/test_signup_form.py.
applied pep8 for auth/tests/test_team_view.py.
applied pep8 for auth/tests/test_team_form.py.
added coverage on requirements.
make: using coverage to run tests.