moved individual lookups in HMRN new diagnosis list to single query in M::HMRN::Data::all_icdo3_diagnoses() - doesn't give exact equivalence to previous method
put CSRF logic into histology blocks worklist to prevent form resubmission - had multiple duplicate 'returned blocks' entries in request_lab_test_history
bugfix: model methods do_specimen_code_update() and new_request() delay do_specimen_associated_lab_tests() until after new specimens loop to avoid problem with Moose attr request_specimen_sample_type() loading only once - for 1st specimen type