e0590c356b
Just as is done with the main LMS application.scss file, rewrite the course.scss file with Mako to conditionally import a theme's variables overrides. Add the course.scss file to the list of ignored Git files so that it doesn't keep getting committed over and over again. This also requires us to add a hardcoded line in the assets Rakefile for the moment, so that the course.scss.mako file gets properly preprocessed. Once the preprocessing is done by a Django management command, we won't have to do this anymore.
Sass Watch: sass --watch lms/static/sass:lms/static/sass -r ./lms/static/sass/bourbon/lib/bourbon.rb