Fix LOAD on action @request.restful()

LOAD didn't work on action decorated with @request.restful() when args and/or vars are passed because the restful method is called with the main "request" object (browser url action) instead of the "other_request" object used by LOAD.
So I have injected the restful method with the good object context.
It's a bit nasty, so if someone knows how to do it better, I'm happy.