Implement a mechanism to display a DOM element's CPView class

AppKit/CPView.j

@@ -291,7 +291,9 @@ var CPViewFlags                     = { },
 
         CPDOMDisplayServerSetStyleLeftTop(_DOMElement, NULL, _CGRectGetMinX(aFrame), _CGRectGetMinY(aFrame));
         CPDOMDisplayServerSetStyleSize(_DOMElement, width, height);
-        _DOMElement.setAttribute("data-cappuccino-view", [self className]);
+
+        if (typeof(appkit_tag_dom_elements) !== "undefined" && !!appkit_tag_dom_elements)
+            _DOMElement.setAttribute("data-cappuccino-view", [self className]);
 
         _DOMImageParts = [];
         _DOMImageSizes = [];

Tools/capp/Resources/Templates/Application/index-debug.html

@@ -52,6 +52,10 @@
             // Uncomment to enable a specific logger:
             //CPLogRegister(CPLogConsole);
             //CPLogRegister(CPLogPopup);
+
+            // Tag view DOM elements with a "data-cappuccino-view" attribute that contains
+            // the class name of the view that created them. Comment this or set to false to disable.
+            appkit_tag_dom_elements = true;
         </script>
 
         <style type="text/css">