Add user roles, store data in database

[ZubairSidhu]

1. Add an optional field to account creation for the user to input a role
2. After creating an account, the users information (email, firebase user id, role) should be sent to the backend to be stored in DB. See backend issue #1
3. Fetch the users role and store in cookies after login

[meghakak]

/cib store data in db

[ctc-devops]

Branch 11-store-data-in-db created!