263-user-model-view-and-editing

Added UsersController, Views, Tests
![zrzut ekranu z 2014-05-26 22 14 42](https://cloud.githubusercontent.com/assets/6718923/3085942/2fd63134-e51f-11e3-87ee-f34b753e2195.png)

![zrzut ekranu z 2014-05-26 22 14 33](https://cloud.githubusercontent.com/assets/6718923/3085946/38e754d8-e51f-11e3-9dcd-4239a8f80ae4.png)

![zrzut ekranu z 2014-05-26 22 14 54](https://cloud.githubusercontent.com/assets/6718923/3085947/3e86b654-e51f-11e3-9902-dd405a9fa72c.png)