Bug/mission attempt alignment

Fixed a small markup issue when editing assessments.

Before: 
![before](https://cloud.githubusercontent.com/assets/4353853/4436858/eb6a019c-4784-11e4-8bae-a7e08f85f541.png)

After:
![after](https://cloud.githubusercontent.com/assets/4353853/4436859/f16f8dbe-4784-11e4-9790-c969e3591a98.png)