replaced results summary requesting of additional tests from additional_tests.yml to database tables - same as diagnosis generated tests; new static view results summary additional tests; moved auto-expand panels from yml to lab_sections table; redrafted additional_tests.t to work with changes to diagnosis & results summary requesting new tests
move lab-test accreditation info from yaml file to database; admin interface to lab-test accreditation; remove flash message about ukas_accredited_tests.yml after new lab-test, replace with redirect if appropriate
