style for qlineedit in status panel

damn, I'm quick #341 

before:
![status](https://cloud.githubusercontent.com/assets/2544251/4877362/a3028ee8-62e5-11e4-99c5-65e7a6800636.png)

after:
![status1](https://cloud.githubusercontent.com/assets/2544251/4877438/0952f91a-62e8-11e4-8b3b-f480101da293.png)