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 mock the restful method but I think that the real restful method will be better...

gluon/compileapp.py

@@ -211,6 +211,7 @@ def LOAD(c=None, f='index', args=None, vars=None,
             request.env.path_info
         other_request.cid = target
         other_request.env.http_web2py_component_element = target
+        other_request.restful = lambda: lambda function: lambda *args, **kwargs: function(*args, **kwargs)  # Needed when you call LOAD() on a controller who has some actions decorates with @request.restful()
         other_response.view = '%s/%s.%s' % (c, f, other_request.extension)
 
         other_environment = copy.copy(current.globalenv)  # NASTY