Fix for 1866: Hiding meaningless headless zone information 

Addresses #1866

Previously for headless zones: ![82666ad0-bb36-11e3-8e78-a6ff8be00c4a](https://cloud.githubusercontent.com/assets/1319950/2635130/fc1b3a10-be81-11e3-8e0e-a556e9698a3e.png)

Now: 
![image](https://cloud.githubusercontent.com/assets/1319950/2635151/306d017c-be82-11e3-8d39-12cce59b84f8.png)