[FIX] Empty Balance Change descriptions

Before:
![image](https://cloud.githubusercontent.com/assets/158528/3999387/f686f6a0-294f-11e4-9325-670da5c9e8ec.png)

After:
![image](https://cloud.githubusercontent.com/assets/158528/3999359/cac9940a-294f-11e4-84b7-a8677f8615ce.png)