Frontend auth tweaks

[aapeliv]

Closes #4106

Backend checklist

• Formatted my code by running autoflake --exclude src/proto -r -i --remove-all-unused-imports src && isort . && black . in app/backend
• Added tests for any new code or added a regression test if fixing a bug
• All tests pass
• Run the backend locally and it works
• Added migrations if there are any database changes, rebased onto develop if necessary for linear migration history

Web frontend checklist

• Formatted my code with make format
• There are no warnings from make lint
• There are no console warnings when running the app
• Added any new components to storybook
• Added tests where relevant
• All tests pass
• Clicked around my changes running locally and it works
• Checked Desktop, Mobile and Tablet screen sizes