Sequence 検索で同じ項目が表示される不具合を解消

## Before

![togogenome](https://cloud.githubusercontent.com/assets/83493/5375171/63cbf722-80aa-11e4-82dd-498eb9fca66f.png)


## After

![togogenome2](https://cloud.githubusercontent.com/assets/83493/5375174/671698ce-80aa-11e4-9d44-6e2bea7ea925.png)