DB/Misc: Misc for Naz'Anak: The Forgotten Depths

Proper phasing for zone 4522; a few missing spawns, some missing scripts etc... etc..

Closes #10447
Closes #10438
DB/SAI: Fix quest "Into the Wild Green Yonder"

Closes #10456
DB&Scripts/Icecrown: Fix quest The Last Line Of Defense and script Argent Cannons

Closes #998
Closes #10460