Use new utility to get course sharing url for social media icons
Enable course sharing url for web application
Coordinate with documentation team for feature docs given that we've existing draft version. http://draft-social-sharing-icons.readthedocs.io/en/latest/building_course/setting_up_student_view.html#enable-social-media-icons
When learners enroll in a course, they can now share links to the course's About Page on Facebook or Twitter.