Working auth and single/message tests

auth/confirm.go

auth/receivedRequest.go

auth/state.go

auth/state_test.go

auth/store/confirmation_test.go

auth/store/previousNegotiations.go

auth/store/previousNegotiations_test.go

auth/store/receivedRequest.go

auth/store/sentRequest.go

auth/store/store.go

auth/store/store_test.go

auth/utils_test.go

single/message/collator_test.go

single/message/request.go

single/message/request_test.go