Update spaceship to work with the new iTC

* Update team selection in spaceship to work with the new iTC (#9238) via Felix Krause
* Fix link to troubleshooting on new docs site (#9236) via fabio teles
* Implement Reports Generator for Screengrab (#9213) via Marcin Urbański

As of 22nd May 2017 we have to access the new API endpoint `olympus.itunes.apple.com` to get a valid `itctx` value for our session 💥

https://github.com/fastlane/fastlane/releases/tag/2.33.0
