fix missing argument to load method of Loader

[michaellopez]

When recording is enabled and a graphql request comes in that should be persisted, the call to load (to see whether the query id already exists or not) does not have the correct amount of arguments. The call needs to pass the operation name to load.

This PR fixes this and adds a test for it. Let me know if you would like me to take a different approach to the test, specifically the enableRecording()/resetRecording() setup. Wasn't sure how you wanted to handle database mutations for the unit tests @esamattis

[michaellopez]

@esamattis Oh right, also the functional tests don't work. It's the functional tests that are failing in the automated tests. I'm assuming it is out of scope for this issue to fix that.

[michaellopez]

@esamattis Sorry to bother you, any chance of getting this merged soon?

[esamattis]

Yeah, the functional test issue is unrelated. Merged in cleaned up commit in 3f0a3ee and released in 0.1.4

[michaellopez]

@esamattis Thank you!