closes #150
Merge pull request #151 from Team-Delta/1046

closes #150
closes #146
Merge pull request #153 from Team-Delta/task-1122

closes #146
closes #155
Merge pull request #156 from Team-Delta/task-874

closes #155
closes #154
patch 1
patch 2
Add/Remove done
rubocop fix
rubocop fix 2
spec fix
patch 3
patch 4
patch 5
Merge branch 'develop' of https://github.com/Team-Delta/GitMyCurriculum into task-1123
patch 6
Merge pull request #157 from Team-Delta/task-1123

closes #154
closes #160