* download CAR file using AtpAgent instead of building URL * add loader icon on download car button * actually save to disk on android * style nits * bottom margin nit * localize toast * remove fallback so back button works correctly * keep throwing an error if mime type isn't used * be more explicit with toasts * send errors to sentry when encountered --------- Co-authored-by: Hailey <me@haileyok.com>