[fix bug 1261759] Upgrade django to version 1.8.12
[fix bug 1261759] Upgrade django to version 1.8.12

akatsoulas/mozillians,mozilla/mozillians,fxa90id/mozillians,akatsoulas/mozillians,mozilla/mozillians,akatsoulas/mozillians,fxa90id/mozillians,mozilla/mozillians,akatsoulas/mozillians,fxa90id/mozillians,johngian/mozillians,fxa90id/mozillians,mozilla/mozillians,johngian/mozillians,johngian/mozillians,johngian/mozillians