Add some waffle-guarded connection points to the Credentials service to start filling out the user flow for Student Records. Specifically, add a button to the Program Progress Details page if a certificate exists, and add a link in the Learner Profile page. Both only appear if the 'student_records' waffle switch is active. LEARNER-4701
Sass Watch: sass --watch lms/static/sass:lms/static/sass -r ./lms/static/sass/bourbon/lib/bourbon.rb