Fix alignment issue in database queries tab

Before:
![image](https://f.cloud.github.com/assets/754918/1502428/51fb28b8-489a-11e3-80c7-3ef352e90ffe.png)

After:
![image](https://f.cloud.github.com/assets/754918/1502433/5b1db834-489a-11e3-8e79-ebf29c56a1ce.png)