[fix bug 894908] Get rid of the space before the comma when there are multiple groups.
[fix bug 894908] Get rid of the space before the comma when there are multiple groups.

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