Switch the cms over to using django-pipeline

cms/envs/common.py

cms/models.py

cms/static/sass/.gitignore

cms/templates/base.html

common/djangoapps/pipeline_mako/__init__.py

common/djangoapps/pipeline_mako/templates/mako/css.html

...on/djangoapps/pipeline_mako/templates/mako/inline_js.html

common/djangoapps/pipeline_mako/templates/mako/js.html

...on/djangoapps/pipeline_mako/templates/static_content.html

common/djangoapps/static_replace.py

lms/envs/common.py

requirements.txt