SSDM-7588: added tests for reducer and sagas

openbis_ng_ui/.eslintrc.js

openbis_ng_ui/build.gradle

openbis_ng_ui/package.json

openbis_ng_ui/src/index.js

openbis_ng_ui/src/reducer/actions.test.js

openbis_ng_ui/src/reducer/middleware.js

openbis_ng_ui/src/reducer/reducer.test.js

openbis_ng_ui/src/reducer/sagas.js

openbis_ng_ui/src/reducer/sagas.test.js

openbis_ng_ui/src/services/openbis.js