Core/Quests: Improved criteria tree quest objective type

* Fixed _completedObjectives not being cleaned when adding quest
* Fixed objective credit being granted if just the criteria tree row containing criteria id was completed (instead of the entire tree linked to objective)
* Retroactively grant progress on quest accept for criteria types that require action that cannot be repeated (such as learning a spell)
Port From (https://github.com/TrinityCore/TrinityCore/commit/4e89a302fcce7644bcd8cf239edad3b409950438)

Source/Game/Entities/Player/Player.Quest.cs

@@ -785,7 +785,7 @@ namespace Game.Entities
                             GetReputationMgr().SetVisible(factionEntry);
                         break;
                     case QuestObjectiveType.CriteriaTree:
-                        m_questObjectiveCriteriaMgr.ResetCriteriaTree((uint)obj.ObjectID);
+                        m_questObjectiveCriteriaMgr.ResetCriteriaTree(obj);
                         break;
                     default:
                         break;

Source/Game/Quest/QuestObjectiveCriteriaManager.cs

@@ -9,6 +9,7 @@ using Game.Networking;
 using Game.Networking.Packets;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace Game
 {
@@ -150,9 +151,11 @@ namespace Game
             }
         }
 
-        public void ResetCriteriaTree(uint criteriaTreeId)
+        public void ResetCriteriaTree(QuestObjective questObjective)
         {
-            CriteriaTree tree = Global.CriteriaMgr.GetCriteriaTree(criteriaTreeId);
+            _completedObjectives.Remove(questObjective.Id);
+
+            CriteriaTree tree = Global.CriteriaMgr.GetCriteriaTree((uint)questObjective.ObjectID);
             if (tree == null)
                 return;
 
@@ -160,6 +163,12 @@ namespace Game
             {
                 RemoveCriteriaProgress(criteriaTree.Criteria);
             });
+
+            CriteriaManager.WalkCriteriaTree(tree, criteriaTree =>
+            {
+                if (criteriaTree.Criteria != null && CriteriaManager.GetRetroactivelyUpdateableCriteriaTypes().Contains(criteriaTree.Criteria.Entry.Type))
+                    UpdateCriteria(criteriaTree.Criteria, 0, 0, 0, null, _owner);
+            });
         }
 
         public override void SendAllData(Player receiver)
@@ -274,7 +283,9 @@ namespace Game
             if (objective == null)
                 return;
 
-            CompletedObjective(objective, referencePlayer);
+            CriteriaTree entireObjectiveTree = Global.CriteriaMgr.GetCriteriaTree((uint)objective.ObjectID);
+            if (IsCompletedCriteriaTree(entireObjectiveTree))
+                CompletedObjective(objective, referencePlayer);
         }
 
         public override void SendPacket(ServerPacket data)