BD-02 BD-03 Add support for LTI1.1 embeds in course tabs and elsewhere

Makefile

lti_consumer/exceptions.py

lti_consumer/lti_1p1/README.rst

lti_consumer/lti_1p1/__init__.py

lti_consumer/lti_1p1/consumer.py

lti_consumer/lti_1p1/contrib/__init__.py

lti_consumer/lti_1p1/contrib/django.py

lti_consumer/lti_1p1/contrib/tests/__init__.py

lti_consumer/lti_1p1/contrib/tests/test_django.py

lti_consumer/lti_1p1/exceptions.py

lti_consumer/lti_1p1/oauth.py

lti_consumer/lti_1p1/tests/__init__.py

lti_consumer/lti_1p1/tests/test_consumer.py

lti_consumer/lti_1p1/tests/test_oauth.py

lti_consumer/lti_xblock.py

lti_consumer/outcomes.py

lti_consumer/tests/unit/test_lti_consumer.py

lti_consumer/tests/unit/test_utils.py

requirements/travis.in

setup.py