[0694] AT-Teleport - Naxxramas

* Spell 29294 - Naxxramas Entry Flag Effect DND - is casted onto players if they complete one of the three attunement quests for Naxxramas. It completes quest 9378 for them. This quest should be needed to enter Naxxramas, not one of the original attunement quests.
  (Prior to this commit, they would have to complete 9122 (the revered one) and could not enter with completed quests 9121 or 9123.