Move XHR object data to Heap namespace

Change-Id: I6c18132917f4609fda80813c6e2b696b1146efa7
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Move data for remaining objects in QtQml into the Heap namespace

Change-Id: Iefef658dc246b5087d5061d964f08378b56c6cef
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Move data for objects in QtQuick into the Heap namespace

Change-Id: Ic9d5946a8e60d235b8442b964dd1478363626441
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Use Heap objects as members

Change-Id: I4f447747480fb7e15975b810e2a8623acc9cde61
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>