added username validation to admin new user function; added specimen type to trial cases alert; revised genomics schema to reclaim unused sections & tests
new barcodes function; re-arranged get_object_by_param() to accept simpler 2-element args (then didn't use it for barcodes function); bugfix to genomics xml validator & generator scripts - method of camelcasing section_name altered original array after 1st cycle of loop; EQA samples flagged as ST for billing; extended xsd for cancer dataset
added request.id & patient_case.id to registration_search to override precedence given by RDBO; updated xml generation & validation with changes for cancer dataset - should still work for rare diseases
