Wrong objects resolved from hoodie.store.removeAll()

Somehow

 ```javascript
hoodie.store.removeAll('bookmark').done(
   function(removedObjects){
        console.log(removedObjects)
   }
);
 ```

resolves with a JavaScript object like this ![removeall_resolved_object](https://f.cloud.github.com/assets/1077917/1616582/08ad8a80-560e-11e3-9a43-65cc607eca76.png)

whereas 

 ```javascript
hoodie.store.findAll('bookmark').done(
   function(foundObjects){
        console.log(foundObjects)
   }
);
 ```
resolves with the following localStorage oriented object 
![findall_resolved_object](https://f.cloud.github.com/assets/1077917/1616583/08b25f4c-560e-11e3-9c49-2c7dac0eeb4f.png)