Because the resulting 404 was causing confusion

Backbone 1.0.0, Underscore 1.4.4

load by doing load separately. In process, upgraded backbone which
necessitated changing getByCid to get and got rid of obsolete
course_settings master object.

Move vendor javascript into common/static/js/vendor, so that they can be shared between the CMS and LMS, and create an html template that includes all of the vendor js needed for the courseware