Returns whether the portal should boot. PORTAL_ENABLED is a full override:
its true/false value wins over config.portal.enabled in both directions,
so an operator can force the portal on, or force a config-enabled portal off,
without editing config files.
Returns whether the portal should boot.
PORTAL_ENABLEDis a full override: itstrue/falsevalue wins overconfig.portal.enabledin both directions, so an operator can force the portal on, or force a config-enabled portal off, without editing config files.