Failing Checks on Rebuild

[JohannesStoehr]

Since about a week the automatic tests are failing on GitHub even though the website itself gets built just fine. Could you take a look at that?

[simonpannek]

Seems to be a breaking change in the faraday library... I tried to fix the ruby version in order to resolve this issue on a separate branch but couldn't get it working. It is probably best to get rid of the current CI platform and set it up from scratch at a later point of time. Testing such a small website is probably overkill anyways ^^

If you are getting annoyed by the failing tests, you can probably just delete the .circleci folder in the repository and I will handle the rest.