REPO: Code-style clean-ups

* Fixed pMap->map
* Fixed pInstance->instance
* Fixed pInsta->instance
* Fixed pQuest->quest
* Fixed pWho->who
* Fixed pTarget->target
* Fixed pGo->go

~DEVNOTES: Handlers/QuestHandler.cpp still needs to be cleaned...

src/server/game/Groups/Group.cpp

@@ -31,7 +31,7 @@
 #include "BattlegroundMgr.h"
 #include "MapManager.h"
 #include "InstanceSaveMgr.h"
-#include "MapInstanced.h"
+#include "Mapinstanced.h"
 #include "Util.h"
 #include "LFGMgr.h"