configured request registration to auto-increment request number (for Cambridge); patched tests to work with auto-incrementing lab number flag

solved fileuploader problem - affected registration script also - cgi scripts using CGI::Simple object had params clobbered by L::L::Utils using a global CGI::Simple object (introduced to overcome CGI::Simple::Standard::escapeHTML causing print_run to hang in symbolise() under dev server) - replaced by global CGI object, pending solution to print_run problem under dev server

changed request_followup data structure to array to allow sort by diagnosis in query

new request_followup.pl cron script