[fix bug 782964] Add language migration file
[fix bug 782964] Add language migration file

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