Adding sum for normalization.  (We don't seem to use gridSize, we could get rid of it?)
Adding sum for normalization.  (We don't seem to use gridSize, we could get rid of it?)

git-svn-id: b5cf87c434d9ee7c8f18865e4378c9faabe04646@2280 17392f64-ead8-4cea-ae29-09b3ab513800

igvteam/igv,igvteam/igv,godotgildor/igv,igvteam/igv,itenente/igv,godotgildor/igv,itenente/igv,igvteam/igv,amwenger/igv,godotgildor/igv,igvteam/igv,itenente/igv,amwenger/igv,amwenger/igv,amwenger/igv,godotgildor/igv,godotgildor/igv,itenente/igv,itenente/igv,amwenger/igv