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 function to notify admin of system error generated by LIMS::error(); C::Roles::RecordHandler::get_previous_cases() skips non-matching nhs_numbers if current request has an nhs_number
modified request error code 'add new' function to skip unique error codes in drop-down menu if already in use - same functionality as edit request error code function
