GraphQL field ordering is _still_ not spec compliant

[lutter]

When running a query like { _meta { block { number } } things { id }} the response contains things first and _meta at the end. This is most likely because we pick fields apart here and then put them together without considering their ordering in the query.

[azf20]

Good catch - to confirm the response is deterministic, but not spec-compliant?

[azf20]

Added to the GraphQL API board @dotansimha