DijitRegistry: initialize layoutPriority to prevent IE<8 errors in BC
DijitRegistry: initialize layoutPriority to prevent IE<8 errors in BC

maier49/dgrid,dylans/dgrid,kfranqueiro/dgrid,maier49/dgrid,kfranqueiro/dgrid,kfranqueiro/dgrid,dylans/dgrid,maier49/dgrid,dylans/dgrid