[Fix Bug 799824] duplicate entries while scrolling
[Fix Bug 799824] duplicate entries while scrolling

akarki15/mozillians,ChristineLaMuse/mozillians,johngian/mozillians,justinpotts/mozillians,mozilla/mozillians,akatsoulas/mozillians,fxa90id/mozillians,glogiotatidis/mozillians-new,justinpotts/mozillians,johngian/mozillians,johngian/mozillians,brian-yang/mozillians,mozilla/mozillians,mozilla/mozillians,safwanrahman/mozillians,justinpotts/mozillians,anistark/mozillians,glogiotatidis/mozillians-new,anistark/mozillians,fxa90id/mozillians,safwanrahman/mozillians,anistark/mozillians,fxa90id/mozillians,mozilla/mozillians,johngian/mozillians,akarki15/mozillians,akatsoulas/mozillians,akarki15/mozillians,hoosteeno/mozillians,chirilo/mozillians,ChristineLaMuse/mozillians,glogiotatidis/mozillians-new,safwanrahman/mozillians,hoosteeno/mozillians,akatsoulas/mozillians,ChristineLaMuse/mozillians,glogiotatidis/mozillians-new,akarki15/mozillians,chirilo/mozillians,brian-yang/mozillians,fxa90id/mozillians,brian-yang/mozillians,akatsoulas/mozillians,brian-yang/mozillians,anistark/mozillians,hoosteeno/mozillians,hoosteeno/mozillians,justinpotts/mozillians,chirilo/mozillians,chirilo/mozillians,safwanrahman/mozillians