[8315] Fixed memory leaks (mostly at server shutdown) and code cleanups. Author: VladimirMangos

* Fixed leak in BattleGround::m_PlayerScores at BattleGround::Reset,
      add and use BattleGroundScoreMap typedef
    * Delete AreaTeam objects stored in global map at shutdown
    * Delete Corpse objects stored in global map at shutdown
    * Store guild bank log entries as objectes instead pointers in log event lists

--HG--
branch : trunk

src/game/ObjectMgr.cpp

@@ -178,6 +178,9 @@ ObjectMgr::~ObjectMgr()
     for (CachePlayerInfoMap::iterator itr = m_mPlayerInfoMap.begin(); itr != m_mPlayerInfoMap.end(); ++itr)
         delete itr->second;
 
+    for (ArenaTeamMap::iterator itr = mArenaTeamMap.begin(); itr != mArenaTeamMap.end(); ++itr)
+        delete itr->second;
+
     for (CacheVendorItemMap::iterator itr = m_mCacheVendorItemMap.begin(); itr != m_mCacheVendorItemMap.end(); ++itr)
         itr->second.Clear();