obiba/opal — pull request #411 by emorency (2014-01-14 22:26:17+00:00)
Title: OPAL-2190: Contingency table improvements

![image](https://f.cloud.github.com/assets/2565497/1915648/d8e15258-7d6a-11e3-9c75-21b0299a4504.png)