Moves unlock-link to "Commanders" div

This is because now all unlocks are commander modules and no longer "Technologies" for units. To clarify:

OLD
![commandersold](https://cloud.githubusercontent.com/assets/132906/4943693/fc2456d2-65f6-11e4-9697-48eac276fc8f.png)

NEW
![commandersnew](https://cloud.githubusercontent.com/assets/132906/4943699/08e8265a-65f7-11e4-955c-44267d3b9f6c.png)