Fix/blacklist url scheme

[Sambego]

Changes

• The blacklistedRoutes needed to be specified with the correct protocol (http:// or https://) to work. This pull request added to option to blacklist a route regardless of the protocol. A configured blacklist routed prefixed with // will be blacklisted for both http:// and https://.
• Compare hostName instead of host so this will work with HTTP requests to URLs with ports (:80 for HTTP, `:433 for HTTPS)
• Updated the readme examples of blacklisted routes without protocol prefixed. this did not work.
• Added more tests to check all allowed white and blacklist options

References

• Blacklisted URLs require scheme #642

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All code quality tools/guidelines in the CONTRIBUTING documentation have been run/followed
• All relevant assets have been compiled as directed in the CONTRIBUTING documentation, if applicable