[fix bug 711329] Respect client's locale on login.
[fix bug 711329] Respect client's locale on login.

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