Add latency to GraceDB event pages
Created by Cody Messick on April 18, 2018. Copied from redmine (https://bugs.ligo.org/redmine/issues/6134)
The latency is currently only listed in the "Latest" section, it's a piece of information that people often inquire about, so it would be really nice to have it in the actual event page somewhere.
Edited by Tanner Prestegard