Adds image label to download panel title

Closes #177 

![image](https://cloud.githubusercontent.com/assets/302258/5022380/f3a517f2-6a98-11e4-9e94-7c6a4eb9df18.png)
![image](https://cloud.githubusercontent.com/assets/302258/5022375/ddcdf05c-6a98-11e4-83ab-f0ccf2caa0a9.png)