Bug#673234 Detecting already used email address as an error condition.
Bug#673234 Detecting already used email address as an error condition.

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