Added fixes to apolloAzureFunctions.js and sample functions for the GraphQL API and for GraphiQL

[michael-golfi]

Still a WIP. Addresses #684.

TODO:

• Update CHANGELOG.md with your change (include reference to issue & this PR)
• Make sure all of the significant new logic is covered by tests
• Rebase your changes on master so that they can be merged easily
• Make sure all tests and linter rules pass

[apollo-cla]

@michael-golfi: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Meteor Contributor Agreement here: https://contribute.meteor.com/

[abernix]

Thanks for opening this originally, and sorry it took so long to get to!

I've made a tweak which still incorporates your other valuable changes but mainly re-instates the previous syntax and more common pattern of passing the respose directly to context.done. This seems to follow the Azure reference a bit more closely. I've also rebased it on the current master, tested it both with the existing tests and locally using the Azure command line tools.

Hopefully this will solve the problem with Azure functions; we'll get this released soon. Thanks again!

[abernix]

This should be published in apollo-server-azure-functions@1.3.5. Please report back how it works!