DB/SAI: Rescript Manaforge quests

Rescripts the following quests: -

* Shutting Down Manaforge B'naar
* Shutting Down Manaforge Coruu
* Shutting Down Manaforge Duro
* Shutting Down Manaforge Ara

All events are now started from gossip select which is correct way rather than player just clicking on console
go remains clickable if player does not have access crystal or is not on quest but displays different gossip without the option to start event
Added mising gossips for npcs in manaforge coruu for if spoken to while player is disguised from item provided for http://www.wowhead.com/quest=10198