Added cobertura code-coverage and javadoc plugins to pom
Added getGene test to OrthologCache.
Added missing OR filterQuery to SolrDao for getGeneToDiseaseAssociationSummaries and getDiseaseToGeneAssociationSummaries to also filter on raw_htpc_score as cases where the IMPC data scored over the threshold but the MGI data didn't were missing which kind of nullified the entire IMPC raison d'etre.