Add frontend unit cases

.babelrc

.circleci/config.yml

.gitignore

hypha/static_src/src/app/src/SubmissionsByStatusApp.js

...nents/CheckBox/__tests__/__snapshots__/index.test.js.snap

...pp/src/common/components/CheckBox/__tests__/index.test.js

...nents/DropDown/__tests__/__snapshots__/index.test.js.snap

...pp/src/common/components/DropDown/__tests__/index.test.js

...FilterDropDown/__tests__/__snapshots__/index.test.js.snap

.../common/components/FilterDropDown/__tests__/index.test.js

...elperComponent/__tests__/__snapshots__/index.test.js.snap

...common/components/HelperComponent/__tests__/index.test.js

...nents/LoadHTML/__tests__/__snapshots__/index.test.js.snap

...pp/src/common/components/LoadHTML/__tests__/index.test.js

...PageDownWidget/__tests__/__snapshots__/index.test.js.snap

.../common/components/PageDownWidget/__tests__/index.test.js

...mponents/Radio/__tests__/__snapshots__/index.test.js.snap

...c/app/src/common/components/Radio/__tests__/index.test.js

...a/static_src/src/app/src/common/components/Radio/index.js

...edAnswerWidget/__tests__/__snapshots__/index.test.js.snap