Added new layout.

I was playing some hours today to create a new adequate layout for the upcoming Propel 2 release, sooo let me know what you think please.

You can see it in action here: http://propelorm.jarves.io/

and here are screenshots:

![screen shot 2014-07-28 at 01 08 24](https://cloud.githubusercontent.com/assets/450980/3715461/04d4695c-15e3-11e4-86e4-d900c6478f6b.png)
![screen shot 2014-07-28 at 01 38 21](https://cloud.githubusercontent.com/assets/450980/3715524/1e806db6-15e7-11e4-907d-8bd17191169f.png)