Enable scrolling in layer selector component
Enable scrolling in layer selector component

This was copied from the prototype.

azavea/raster-foundry,raster-foundry/raster-foundry,kdeloach/raster-foundry,azavea/raster-foundry,aaronxsu/raster-foundry,kdeloach/raster-foundry,kdeloach/raster-foundry,aaronxsu/raster-foundry,azavea/raster-foundry,raster-foundry/raster-foundry,kdeloach/raster-foundry,azavea/raster-foundry,aaronxsu/raster-foundry,kdeloach/raster-foundry,aaronxsu/raster-foundry,azavea/raster-foundry,raster-foundry/raster-foundry