Violinplot no outliers

Plot violinplots of a gene/event without outliers reliably

![image](https://cloud.githubusercontent.com/assets/806256/5495493/091de65a-86b3-11e4-94c7-541e770f9b6c.png)

Remaining questions:
1. Should outliers count in the `n=60` count of cells below the violins?
2. Should outliers and pooled be treated separately? As in, if a cell is labeled as both a pooled and an outlier, then should it be plotted in both?