Feature/make subgroups of secret parents secret

# when setting up a subgroups now

### secret parent grp:
![image](https://f.cloud.github.com/assets/2665886/1660806/f8dcfd38-5bc7-11e3-9ca0-e051455ed36e.png)

### public parent grp:
![image](https://f.cloud.github.com/assets/2665886/1660813/0bf17fa2-5bc8-11e3-98e5-baa0a2dc606e.png)