Dhtmlx table styling

Before:
![screen shot 2014-06-20 at 3 25 42 pm](https://cloud.githubusercontent.com/assets/1287144/3344894/a0d3325c-f8b0-11e3-855f-dee943128e4a.png)

After:
![screen shot 2014-06-20 at 3 24 31 pm](https://cloud.githubusercontent.com/assets/1287144/3344895/a42d40aa-f8b0-11e3-82c4-3bb08bce4edd.png)