Added new mobile css entry in css pipline and removed dates heading for mobile view. LEARNER-3206
Sass Watch: sass --watch lms/static/sass:lms/static/sass -r ./lms/static/sass/bourbon/lib/bourbon.rb
Added new mobile css entry in css pipline and removed dates heading for mobile view. LEARNER-3206
Sass Watch: sass --watch lms/static/sass:lms/static/sass -r ./lms/static/sass/bourbon/lib/bourbon.rb