docs: def init():
      """Initialise and configure the app, database, scheduler, etc.
  
      This should be called once at application startup or at tests startup
      (and not e.g. called once for each test case).
  
      """
      global _users, _names
      _configure_app(app)
      _users, _names = _init_login_manager(app)
      _configure_logger()
      init_scheduler(app.config.get('SQLALCHEMY_DATABASE_URI'))
      db.init(app.config.get('SQLALCHEMY_DATABASE_URI'))