add time to alert
this makes a dynamically updated plot that computes t_{gcn_prelim_sent} - t_{0} for production superevents. for now, still living on the perpetually-in-beta reports page.
this makes a dynamically updated plot that computes t_{gcn_prelim_sent} - t_{0} for production superevents. for now, still living on the perpetually-in-beta reports page.