[Bug Fix] NPC Faction War prevention. (#3595)

* [Bug] NPC Faction War prevention.

This should assist with prevention of NPC Faction waring. I have been using this code on my server for over 5 years with no coredumps or any noted bugs. This was brought up as users have reported a few events where they can trigger NPC's to fight each other.

* Correct a few entries to line up with updated code.

* Re-add missing RestTimer functionality

zone/mob.cpp

@@ -4888,16 +4888,14 @@ bool Mob::RemoveFromHateList(Mob* mob)
 	return bFound;
 }
 
-void Mob::WipeHateList()
-{
-	if(IsEngaged())
-	{
-		hate_list.WipeHateList();
-		AI_Event_NoLongerEngaged();
-	}
-	else
-	{
-		hate_list.WipeHateList();
+void Mob::WipeHateList(bool npc_only) {
+	if (IsEngaged()) {
+		hate_list.WipeHateList(npc_only);
+		if (hate_list.IsHateListEmpty()) {
+			AI_Event_NoLongerEngaged();
+		}
+	} else {
+		hate_list.WipeHateList(npc_only);
 	}
 }