Rede de descontos - Campo de busca

**O documento E.F solicita desta forma:**

![image](https://user-images.githubusercontent.com/29232176/26908942-29d26630-4bd4-11e7-97dc-e61baf5dbaf5.png)


**Hoje o campo de busca está desta forma:**

![image](https://user-images.githubusercontent.com/29232176/26908965-4cd4fe40-4bd4-11e7-89cc-7a846a3511a9.png)