function to retrieve previous requests combined with get_single_request_data() so available to all views (search, results, report, etc); extended outstanding lab-tests display to unreported & unauthorised worklists
added lab-tests signed-off to Resources audit section; added results summary updates to ppm & results server feed; results summary textbox & select entries joined by new-line not semi-colon
record summary displays previous doi warning if previous doi but not current record; outreach questionnaire fixes; new diagnosis validation - submission of sub-category requires icdo3
patched make_chart() method to eval makeChart() to capture error for log; edit imaging data; moved staging data tt block to nodal & extranodal tt for sharing
