[10113] Some cleanups in Instance loading code.

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<pre>m src/game/MapInstanced.cpp
m src/game/MapInstanced.h
m src/game/MapManager.cpp
m src/game/Player.cpp
m src/game/Player.h
m src/shared/revision_nr.h

[10113] Some cleanups in Instance loading code.

* Remove reduncent chekc and args for MapInstanced::CreateInstance(const uint32
mapId, Player * player)
* Rename for avoid name duplication raw InstanceMap creating to
MapInstanced::CreateInstanceMap
* Move lookup code of player/group bounde instance save to
Player::GetBoundInstanceSaveForSelfOrGroup</pre>



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