Fixes #147.  Use the layerTypes array to determine if the layer is a raster layer or not.  Just using the style no longer works because there are no styles for raster layers.
Fixes #147.  Use the layerTypes array to determine if the layer is a raster layer or not.  Just using the style no longer works because there are no styles for raster layers.

asir6/FusionLab,asir6/FusionLab,asir6/FusionLab,asir6/FusionLab