bugfix to calculate_composite_p53 method in case of empty p21; bugfix to M::R::ReportUpdate::do_additional_options() to prevent inappropriate deletion of teaching option
patched L::Mail::_sendmail() to add 'content-type' header in lowercase otherwise ignored; M::User::register_login() truncates HTTP_USER_AGENT to mex 255 chars; gallium_data.pl sends .dat file as well as .xls
outreach charts don't plot unless 2 or more datasets; added find GP by practice function to outreach demographics; set permissions mode on all crons so svk revert on production doesn't revert to 644; set results summary to default open on report page - correctly this time
