Use latest prettier as devDependency so tools will use (or can be
configured to use) the npm provided version.
The unique config change is to use single quotes instead of double
quotes.
If we do a router.push to the login view the previous component will receive
anyway the error and set the global error after the login view is mounted (!!!)
and so the main app will show the global error instead of the login view.
Not sure how to avoid this. As a really ugly workaround just return an empty
response on 401 so the components (since they are currently assumong the
response is always define) will throw an exception and not set the global error.
