Remove the limit to 8 pictures in the view

We allow the user to attach more than 8 pictures to a post, everything is processed correctly after that, so I propose to remove the limit to 8 pictures by post because it's only in the view.

It renders pretty well already, even if the lightbox (is that the correct name?) can be improved (see the second screenshot).

![more-than-8-stream](https://f.cloud.github.com/assets/930064/2218750/7e7255fa-9a35-11e3-99b3-5af72eae4b22.png)

![more-than-8-lightbox](https://f.cloud.github.com/assets/930064/2218729/eefbb2d6-9a34-11e3-884e-ccea192a8d75.png)