Scripts/Spells: Adding overrides Death Grip Initial.

Thanks @Goatform
Merge pull request #13794 from Gooyeth/3.3.5_dk

Scripts/Spells: Adding overrides Death Grip Initial.
Scripts/Quests: Fix Quest A Spirit Guide

- Ensures rep adjustment buff is always applied (overrides evade, implements existing evade + re-apply buff)
- Removes un-owned ravagers with incorrect faction from DB (the correct ones are spawned with their masters without the DB entries)
- Create some extra steps in the wolf's waypoints in order to generate some AI events for the Ryga NPC. I think it's a bit of a dirty solution, but it seems to work with minimal changes.
- Created RP series of events with Ryga NPC and Ancestral Wolf Spirit (Ryga Kneels, talks to wolf, then returns to spawn position after around a minute).

Closes #13619
Fix #4028
Core: NPC Interaction change for unfriendly reputation.

For units with unfriendly reputation, check using the normal reaction function, instead of reading faction directly.

This allows specific buffs that alter creature reaction to work on the player, this allowing players to complete quests.

Closes #13629
Scripts/Spells: Move death grip from DB

Moves death grip from DB to spellscript for clarity and to reduce confusion in future.
Merge pull request #13796 from Unholychick/3.3.5

Scripts/Spells: Move death grip from DB
Scripts/Nexus: Keristrasza converted to BossAI and EventMap
DB/Creature: Add trigger and civilian flags to the other difficulty entries of the Combustion trigger
DB/Creature: Fix a typo mess up
Merge remote-tracking branch 'upstream/3.3.5' into 3.3.5