Fix model not being saved

I was struggling to make a simple model save since yesterday, relations wasn't working either, but first I was just trying to make the parent to save, so I went to the Vocal code and could not find where `$data` was being used in the saving routine. Added this code to my fork and now it (parent saving) works fine. 

Since this is something really basic, I'm still wondering if I wasn't doing something wrong. Basically I had all my data in the request, which was correctly loaded by `saveRecursive()`, it was just not being used by `save()`.