RAD-297 Harmonize service getters RadiologyReport
continue with RadiologyReportService
* add class javadoc
* harmonize javadocs
* remove throws IAE declarations
* throw IAE if given null if param required
* hasRadiologyOrderClaimedRadiologyReport throws IAE if given null instead of
returning false, since this is consistent with hasRadiologyOrderCompletedRadiologyReport
* and use "should" instead of "shall" in RadiologyOrderService to be consistent
* rename a test in RadiologyStudyServiceComponentTest
