Ragnarson/people — pull request #6 by mmarcinkowski (2014-08-11 12:04:47+00:00)
Title: #4 fixed the positions edit page throws 500

Fixed the positions edit page throws 500.
Add tests.
![zrzut ekranu z 2014-08-11 11 45 26](https://cloud.githubusercontent.com/assets/6718923/3875285/87f775a0-214f-11e4-89d3-9bca22c0501f.png)