do not display count icon when there is no role request

![screen shot 2014-10-17 at 12 03 43 am](https://cloud.githubusercontent.com/assets/4983239/4665841/12fc2d26-554e-11e4-99e9-cb25e35ab831.png)

The sidebar count icon still appear when there is no role request.

Fixed by put icon span inside if statement.