expanded cols on incomplete_tests worklist; bugfixes to worklists.t after recent change; added referral_source rel to get_incomplete_request_lab_tests() query
added specimen filter to request status worklists; combined date and delta values with colour-coded display in incomplete tests & request status worklists
bugfix to nhs_number compliance audit - query required rquest to be in clinical trial - should be 'trial_name IS NULL OR trial_name NOT IN (..)'; added summary section to dashboard request status
patched drilldown tooltip js to supply encoded query params instead of path args to cope with a slash in test name (eg CCND1/IGH), interpreted as an arg delimiter by dispatcher
