Update of Category scene block

Centered category image
Placed text above and bellow image.

![screenshot from 2013-11-26 15 04 15](https://f.cloud.github.com/assets/4573767/1622538/87b88a66-56a7-11e3-80fa-20d1e200af86.png)
![screenshot from 2013-11-26 15 05 08](https://f.cloud.github.com/assets/4573767/1622539/87ee8684-56a7-11e3-9f6e-ffe5baa2876b.png)

I think this is better. Before the text overlapped the image, and image was aligned to left.