Convert NodeList and NamedNodeMap to v4

Change-Id: I7d5d02e5c7b895a748e27566b1f7a9c153b976db
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Convert most getter methods over to v4

Change-Id: I92677cb47a89319fd69ca708b1b88cf573a150ad
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>