#18 Fixed 'Potential' checkbox on the project edit page

![zrzut ekranu z 2014-08-18 15 32 17](https://cloud.githubusercontent.com/assets/6718923/3952235/052d56c6-26e0-11e4-9ad0-0964c95be6dd.png)
![zrzut ekranu z 2014-08-18 15 32 31](https://cloud.githubusercontent.com/assets/6718923/3952237/05e31efc-26e0-11e4-911a-487530ebab44.png)