bugfixes a) auto-vivification in genomics_xml.pl, b) auto-vivification didn't cause validation failure in xml_validate.pl as params validated after xml created - changed to same order as in genomics_xml.pl; applied same fix as genomics_xml.pl to return value from validate_params() in xml_validate.pl
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 patient summary header to all request-related pages (phonelog, errorlog, email, data edits, unlock record, etc); option to switch off gross description field
added patient note field to screen and results page; bugfixes: unlock_request() needed new acions to match tt; patient => patient_note is one-to-one not one-to-many; new_user_msg.tt formatting
patched C::Screen::edit() to use same screening function as used at initial screen; fixed a lot of failing tests due to new screening functions - report_status.t still failing
moved request audit in screening function to optional & disabled it; moved set_querylog_args & set_errorhandler_args near top of cgiapp_prerun() so they take effect for login & session update handling
