[0618] - Quest: Assisting Arch Druid Staghelm - messed up relations

* Corrected entries in creature_questrelation of all 3 Assisting Arch
  Druid Staghelm quests, they were messed up. (2, SW and DA, starting in
  IF ... etc.)

Source: http://www.wowhead.com/quest=3763
        http://www.wowhead.com/quest=3789
        http://www.wowhead.com/quest=3790