Fixed bug with DiseaseAssociation.compareTo() not correctly comparing objects with the same scores which led to missing associations when TreeSet was being used to store them.
Changed column headings to better describe the data. Fixed bug where diseases in the predicted section always had literature evidence too.
Changed class names of DiseaseDao to PhenoDigmDao as this more accurately describes the actual class function. Added a test-services context to be used for proper offline db unit testing.