Method on ExpertService uses DiseaseOccurrenceDao to call Named Query on Disease Occurrence domain object.
Tests
Another test
Tests
DAOs moved out of the abstract test class
Throw exception from ExpertService method if the expert or the disease group doesn't exist in the database, with corresponding tests.
Merge branch 'master' into 94-expert-service-disease-occurrence-list
Code review changes: whitespace, private method and use isEqualTo
Fix to test: should have been comparing list of DiseaseOccurrences with DiseaseOccurrences, not with DiseaseOccurrenceReviews!
Merge pull request #29 from SEEG-Oxford/94-expert-service-disease-occurrence-list

Return disease occurrences yet to be reviewed by an expert