changed linear interpolation to nearest and added rube ragdoll with testbed in lab

lab/rube/js/jackinthebox.js

@@ -0,0 +1,26 @@
+
+var jackinthebox = function() {
+    //constructor
+}
+
+jackinthebox.prototype.setNiceViewCenter = function() {
+    //called once when the user changes to this test from another test
+    PTM = 70;
+    setViewCenterWorld( new b2Vec2(0, 10.5), true );
+}
+
+jackinthebox.prototype.setup = function() {
+    //set up the Box2D scene here - the world is already created
+    
+    if ( loadSceneFromRUBE(jack_scene) ) //jack_scene is defined in jack-min.js
+        console.log("RUBE scene loaded successfully.");
+    else
+        console.log("Failed to load RUBE scene");
+        
+    doAfterLoading();
+    
+}
+
+jackinthebox.prototype.getComments = function(canvas, evt) {
+    return "Created in R.U.B.E editor. Pull the latch to the side to open the box.";
+}