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 00 57 09](https://cloud.githubusercontent.com/assets/450980/3715455/77ffe290-15e2-11e4-9459-4fe60ea914d5.png)