Remote property observation does not request old/new values. Auto-save broken.

[levans]

In WLRemoteObject.j, -activateRemotePropertiesObservation sets up the observation of the remote properties to detect changes.
However, the line:
[self addObserver:self forKeyPath:[property localName] options:nil context:property];

does not request the correct options for sending the old an new values to the observer.

I made the change:
[self addObserver:self forKeyPath:[property localName] options:(CPKeyValueObservingOptionOld | CPKeyValueObservingOptionNew) context:property];

and now the properties correctly get set dirty and the PUT is issued correctly.