Display the link only when viweing the node.


![halley s comet john](https://f.cloud.github.com/assets/1222368/917784/23f1ec98-feaa-11e2-9d9d-406c13040743.png)
#3340 
![halley s comet john](https://f.cloud.github.com/assets/1222368/917780/1a3d1dda-feaa-11e2-8a2c-fa9a57333e8a.png)