DB/SAI: Powering Our Defenses

Powering Our Defenses SAI version, finally gets this quest working Blizzlike,

* Deletes the permament DB spawns of enraged wraith (these are not spawned randomly by script as they should be)
* Correct faction for infused crystal so now the Enraged Wraiths will actually attack it
* Fixes the despawning/text spamming issue