add item filtered out to datamanager
add item filtered out to datamanager

Change-Id: Idd231dd550e53797c525eaeb69b9d0e74e6506c8
Reviewed-on: http://cr.qtquick.me/200
Tested-by: http://ci.qtquick.me/
Reviewed-by: Tasuku Suzuki <42980d970444f9101663582e70cd53623b3238b4@gmail.com>
Tested-by: Tasuku Suzuki <42980d970444f9101663582e70cd53623b3238b4@gmail.com>

yuntan/twitter4qml,yuntan/twitter4qml