Fixed init method for Offers service
Fixed init method for Offers service

refs https://github.com/TryGhost/Ghost/commit/da152a0a1

The cleanup of the Offers labs flag inadvertently removed this logic.

ErisDS/Ghost,ErisDS/Ghost,TryGhost/Ghost,e10/Ghost,ErisDS/Ghost,TryGhost/Ghost,e10/Ghost,TryGhost/Ghost