!fixup Mark DAO methods as delegate

Allow juggler to mix in these methods.

lib/models/data-model.js

@@ -403,6 +403,7 @@ DataModel.setupRemoting = function() {
 
   function setRemoting(scope, name, options) {
     var fn = scope[name];
+    fn._delegate = true;
     options.isStatic = scope === DataModel;
     DataModel.remoteMethod(name, options);
   }