[0640] Improved scripted event for quests 735 & 736

* Improved scripted event 452 for quests 735 & 736 (The Star, the Hand
and the Heart, Alliance / Horde)
Now the NPC 2937 (Dagun) will spawn in the water and march toward
players instead of spawning on top of them

* Added missing equipment to creature 2937 (Dagun the Ravenous)
Source: Source: http://www.wowhead.com/npc=2937#screenshots:id=91348
[0641] Added missing spawn of creature 12900

* Added missing spawn of creature 12900 (Somnus) in Swamp of Sorrow
Now Horde players will be able to complete that part of the Onyxia
quest chain
* Added movement to creature 12900 (Somnus)
Source: PSMDB