credit past is taking up too much prime real estate relegate past contributors to other section, add missing corporate sponsor Palantir Technologies (funded geography and funding point cloud), minor updates to bios, alphabetize core contributors otherwise have to go by relevance and get into hissing fights

git-svn-id: http://svn.osgeo.org/postgis/trunk@11485 b70326c6-7e19-0410-871a-916f4a2858ee