add laser on/off gcode. cleanup help, export dialogs

js/geo.js

@@ -387,7 +387,14 @@ var gs_base = exports;
         offsetPrecision : offsetPrecision,
         intersectRayLine : intersectRayLine,
         intersect : intersect,
-        determinant : determinant
+        determinant : determinant,
+        comma: (v) => {
+            let [lt,rt] = v.toString().split('.');
+            lt = lt.toString().split('').reverse().map((v,i,a) => {
+                return (i < a.length - 1 && i % 3 === 2) ? `,${v}` : v
+            }).reverse().join('');
+            return rt ? `${lt}.${rt}` : lt;
+        }
     };
 
 })();