Extended lta_request response with online+progressing (+ extra lookup in graphql)
- Added online + progressing to lta_request.response
- Added test coverage for evaluate_errors_bring_online (there was none)
- Added extra not equal ('ne') lookup for use in graphql schema, so you can query the api saying "not equal to status 'submitted'"
Custom 'ne' lookup is taken from django documentation: https://docs.djangoproject.com/en/4.1/howto/custom-lookups/#a-lookup-example
Edited by Robbie Luijben