Change 'Error' to 'Diff' in console.

(Error is to scary)

console/js/dt_status.js

@@ -87,8 +87,8 @@ function dt_status(element_name) {
 	this.val_el_pos.suffix_set("°");
 	this.val_fb_pos.suffix_set("mm");
 	this.val_t.suffix_set("UTC");
-	this.val_az_sp.label_set("Error");
-	this.val_el_sp.label_set("Error");
+	this.val_az_sp.label_set("Diff");
+	this.val_el_sp.label_set("Diff");
 	this.val_az_north.label_set("North");
 	this.val_az_north.suffix_set("°");
 	this.val_az_sp.suffix_set("°");