fix: moves link on product form opening wrong view

In product form view, the 'moves" link button will by default use the stock move tree view which the lowest priority, but this is not the one we want here.

Indeed, I think we want the normal stock move tree view you would also get from the "moves" menu of the warehouse app. Instead it opens a stock view that is apparently meant to be shown only inside pickings and which hides the source location or the picking reference for instance.

In that patch I specify the proper view reference again.

before:
![before](https://cloud.githubusercontent.com/assets/16926/4052719/0b6397cc-2d6f-11e4-988b-71a5b6c7659b.png)

after:
![after](https://cloud.githubusercontent.com/assets/16926/4052727/1b98b064-2d6f-11e4-8fc7-a312386e9694.png)