Feature/hideprivategames

fixed #103
Add a little checkbox, that hide games with password (Private Games)

before:
![image](https://cloud.githubusercontent.com/assets/1217999/4801569/7ada4942-5e35-11e4-9c96-81afa3191c77.png)

after:
![image](https://cloud.githubusercontent.com/assets/1217999/4801573/83e31fd2-5e35-11e4-972d-aa02050e35b4.png)