Merge branch 'features/unit-tests' into 'dev'

jest.config.js

package.json

scripts/createConnections.js

scripts/createDayDataFiles.js

scripts/data/dayData-elec.json

scripts/data/dayData-gas.json

scripts/data/dayData-water.json

scripts/data/dayData.json

scripts/importAccount.bat

scripts/importData.bat

src/components/FAQ/FAQContent.spec.tsx

src/components/FAQ/FAQView.spec.tsx

src/components/FAQ/__snapshots__/FAQView.spec.tsx.snap

src/components/Feedback/FeedbackModal.spec.tsx

src/components/Feedback/FeedbackModal.tsx

...onents/Feedback/__snapshots__/FeedbackModal.spec.tsx.snap

src/components/Header/CozyBar.spec.tsx

src/components/Header/Header.spec.tsx

src/components/Header/Header.tsx

src/components/Header/__snapshots__/CozyBar.spec.tsx.snap