updated logger to avoid logging arrays

src/main/javascript/doc.js

@@ -66,7 +66,7 @@ log = function(){
   log.history = log.history || [];
   log.history.push(arguments);
   if(this.console){
-    console.log( Array.prototype.slice.call(arguments) );
+    console.log( Array.prototype.slice.call(arguments)[0] );
   }
 };