[10073] Make object active at applying view on it

also isActiveObject check moved to WorldObject - all worldobjects are inactive by default, excluding players
this is a final part of cameras implementation

(based on commit efc9623)

Signed-off-by: VladimirMangos <vladimir@getmangos.com>

Also remove template-way code selection for object for Map::AddToActive/Map::RemoveFromActive.
This simplify function use from not Map code.

src/game/GameObject.h

@@ -703,7 +703,6 @@ class MANGOS_DLL_SPEC GameObject : public WorldObject
 
         GridReference<GameObject> &GetGridRef() { return m_gridRef; }
 
-        bool isActiveObject() const { return false; }
         uint64 GetRotation() const { return m_rotation; }
     protected:
         uint32      m_spellId;