Core/Phases:

- Implemented CONDITION_SOURCE_TYPE_PHASE (26)
- Implemented phase_area DB table to link phases to specific areas using conditions
- updated logic to correctly handle phases gained from auras and areas (they should not remove each other's phases)

src/server/game/Entities/GameObject/GameObject.cpp

@@ -2150,11 +2150,13 @@ void GameObject::SetDisplayId(uint32 displayid)
     UpdateModel();
 }
 
-void GameObject::SetInPhase(uint32 id, bool update, bool apply)
+bool GameObject::SetInPhase(uint32 id, bool update, bool apply)
 {
-    WorldObject::SetInPhase(id, update, apply);
+    bool res = WorldObject::SetInPhase(id, update, apply);
     if (m_model && m_model->isEnabled())
         EnableCollision(true);
+
+    return res;
 }
 
 void GameObject::EnableCollision(bool enable)