Fix LOAD() in restful context

When you call LOAD() on a controller who has some actions decorates with @request.restful(), it fail with:

    @request.restful()
    TypeError: 'NoneType' object is not callable

Because LOAD use other_request variable who are a Request but without all methods and therefore without restful method.
I've just inject the restful method.
You can also use LOAD() to call an action decorates with @request.restful().