Updates sprites and JS templates for sprite gen in dashboard

![screen shot 2013-12-03 at 14 15 04](https://f.cloud.github.com/assets/1155163/1667041/f2f870ea-5c4f-11e3-84cf-237fd03d9555.png)
![screen shot 2013-12-03 at 14 15 11](https://f.cloud.github.com/assets/1155163/1667042/f2f8e764-5c4f-11e3-8cf4-ef84003d36d2.png)