Core/Maps: Changed the way area data is stored in maps, it now uses ID field from AreaTable.dbc instead AreaBit used for exploration marker (and is not unique anymore on top of simply being stupidly confusing)

Note: Extracting maps is required
(cherry picked from commit db0b8bf24e2b8eb87e6aed7b031ebe138717403d)

# Conflicts:
#	src/server/game/Achievements/AchievementMgr.cpp
#	src/server/game/Chat/Chat.cpp
#	src/server/game/Conditions/ConditionMgr.cpp
#	src/server/game/DataStores/DBCStores.cpp
#	src/server/game/DataStores/DBCStores.h
#	src/server/game/DataStores/DBCfmt.h
#	src/server/game/Entities/Player/Player.cpp
#	src/server/game/Globals/ObjectMgr.cpp
#	src/server/game/Handlers/BattleGroundHandler.cpp
#	src/server/game/Handlers/MiscHandler.cpp
#	src/server/game/Maps/Map.cpp
#	src/server/game/Spells/Spell.cpp
#	src/server/game/Spells/SpellEffects.cpp
#	src/server/scripts/Commands/cs_go.cpp
#	src/server/scripts/Commands/cs_group.cpp
#	src/server/scripts/Commands/cs_lookup.cpp
#	src/server/scripts/Commands/cs_misc.cpp
#	src/tools/map_extractor/System.cpp
#	src/tools/mmaps_generator/TerrainBuilder.cpp

src/server/game/AI/SmartScripts/SmartScriptMgr.cpp

@@ -468,7 +468,7 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder& e)
                     TC_LOG_ERROR("sql.sql", "SmartAIMgr: Entry %d SourceType %u Event %u Action %u uses non-existent Map entry %u, skipped.", e.entryOrGuid, e.GetScriptType(), e.event_id, e.GetActionType(), e.event.respawn.map);
                     return false;
                 }
-                if (e.event.respawn.type == SMART_SCRIPT_RESPAWN_CONDITION_AREA && !GetAreaEntryByAreaID(e.event.respawn.area))
+                if (e.event.respawn.type == SMART_SCRIPT_RESPAWN_CONDITION_AREA && !sAreaTableStore.LookupEntry(e.event.respawn.area))
                 {
                     TC_LOG_ERROR("sql.sql", "SmartAIMgr: Entry %d SourceType %u Event %u Action %u uses non-existent Area entry %u, skipped.", e.entryOrGuid, e.GetScriptType(), e.event_id, e.GetActionType(), e.event.respawn.area);
                     return false;