added datetime specimen taken to registration and print_view pages; removed CPA icon from report display (interferes with messaging lionks); changed colours on additional comments display
added ability to consider previous diagnoses to auto-screening function; added patient_id as hidden field to request/add_new.tt for use with auto-screening & previous diagnoses function
bugfixes - new_request validation was broken by having 2 msg keys; fixed issue_diagnosis_revision_alert() in previous version caused test scripts to trigger messaging
