Fix cloning of curve object

Author: BruceSherwood

ForInstalledPython/glow.min.js

@@ -1383,8 +1383,8 @@ $(function () {
                 ev.preventDefault()
                 // If I don't pass anything for features, I get a new tab instead
                 var features = "titlebar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes,toolbar=yes"
-                window.open("/#/", "GlowScriptRun", features, true)
-                window.open(run_link, "GlowScriptRun", features, true)
+                window.open("/#/", "GlowScriptRun", features)
+                window.open(run_link, "GlowScriptRun", features)
             }
         }
 

GlowScriptOffline/glowscript_libraries/glow.3.0.min.js

@@ -507,7 +507,7 @@
         		var oldargs = {canvas:cvs, pos:pos, __radius:this.__radius,
         				__shininess:this.__shininess, __emissive:this.__emissive, 
                 		visible:true, __pickable:this.__pickable}
-        		ret = new curve(oldargs)
+        		ret = curve(oldargs)
         	} else if (this instanceof helix) {
         		var oldargs = {canvas:cvs, __thickness:this.__thickness, __coils:this.__coils,
         				__shininess:this.__shininess, __emissive:this.__emissive,