Core/QuestStatus:

- Separate rewarded quests from active quests, and store them in a new table to reduce database size
- Drop the no longer needed `rewarded` column from character_queststatus for smaller table size
- Prevent filling the database with dropped quests
  - Delete useless records
- Implement queststatus save "queues" instead of states
- Minor optimizations

WARNING: Backup your database!

--HG--
branch : trunk

src/server/game/Spells/SpellEffects.cpp

@@ -6116,12 +6116,7 @@ void Spell::EffectQuestClear(SpellEffIndex effIndex)
         }
     }
 
-    // set quest status to not started (will be updated in DB at next save)
-    pPlayer->SetQuestStatus(quest_id, QUEST_STATUS_NONE);
-
-    // reset rewarded for restart repeatable quest
-    QuestStatusData &data = qs_itr->second;
-    data.m_rewarded = false;
+    pPlayer->RemoveQuest(quest_id);
 }
 
 void Spell::EffectSendTaxi(SpellEffIndex effIndex)