[ENYO-265] fixing reordering

The original code verified the inSender was the current scroll strategy. inSender is unreliable, and event bubbling changes -- changed what the inSender of this event is; this broke reordering. 

The new code is checking that the event's originator, is not the scroll strategy (most likely an item) , and then will engage reordering. 

Enyo-DCO-1.1-Signed-off-by: Derek Anderson <derek.anderson@lge.com>