PostgreSQL Bios Page Updated

Long overdue, I’ve finally committed a round of updates to the [ PostgreSQL developers bios page]. The page highlights contributors who help make PostgreSQL what it is; congratulations to the new additions to the list and also to those who have worked there way to being designated as “major contributors”. Along with the new contributors, I’ve also added a new section for past contributors. The idea came from a desire to remove some of the folks who have gone on to other activities, but to not discount those contributions entirely; I suspect the list is wildly incomplete but hopefully it is a good start to helping acknowledge some of those folks who helped get us where we are today.