* Add support for redirecting to external pages after logout
This is primarily useful for deployments where the account is managed and needs to be logged out in other places too, like an SSO system.
See docs for more information.
* Add e2e test and fix Windows instructions
* Fix performance gathering stats
* use logger
Because the tests are run directly by node, we have to use the CommonJS module syntax. We could run the thing through babel, but then we just have another babel.
Windows instructions are from experience and may not be optimized.
