lastSaved is broken when API doesn't return saved object in response #272
Description
It happens on this line: https://github.com/js-data/js-data/blob/master/src/datastore/async_methods/save.js#L79
{{ message }}
It happens on this line: https://github.com/js-data/js-data/blob/master/src/datastore/async_methods/save.js#L79