Cleanup Style Issues

```
$ bundle exec rake rubocop
Running RuboCop...
 39/39 files |============ 100 ===========>| Time: 00:00:01 

39 files inspected, no offenses detected
```
this change includes a slight change in behavior, which is that the `require_key?` method is no longer called and that we will send the cookie in place of the key even if a request specifies `require_api_key!`