- ADMIN_INITIAL_PASSWORD : The initial password for the administrator account (currently unused)
- JWT_SECRET : the secret for jsonwebtoken (random string)
- MONGODB_URI : URI to the MongodDB
- SESSION_SECRET : the secret used for sessions (random string)
- VH_EMAIL : The email address for automated emails
- VH_EMAIL_PASSWORD : the email address password
- VH_ENV : if set to 'DEVELOPMENT', routing will compile Pug files each time so server doesn't have to be restarted when messing with views