Greenland map: get the lines to sort correctly, based on "order" attribute.

[DanielJWood]

for some reason, the sort isn't working in.

	    lines = linebox.selectAll(".lines")
	      .data(linesRaw.features.sort((a,b)=> b.properties.order > a.properties.order))
	        .join("path")
	        .attr("class",d => `lines ${d.properties.styleClass} order-${d.properties.order}`);

We walk cold things to be below the others

[DanielJWood]

Should have been this:

lines = linebox.selectAll(".lines")
	      .data(linesRaw.features.sort((a,b)=> b.properties.order - a.properties.order))
	        .join("path")
	        .attr("class",d => `lines ${d.properties.styleClass} order-${d.properties.order}`);