removed request_gross_description from app; added request_secondary_diagnosis definition; replaced underscores with spaces in history display; morphology and comment optional displays in request summary view; more tests in report.t

added function to highlight if patient has previous request for clinical trial if not currently a clinical trial request; loop counter on request history

refactored request nav-link algorithms to hide links to functions from unauthorised users

new NYCRIS cron script

split history display into chronological order and by categories for request & lab-test data