Fix for open event not firing after dragging open

[magumbo]

Drag close works fine already, this fixing dragging open.

[ashishsajwan]

doesn't works..

open event not firing when we swipes finger across device width.

if we swipe starting from left edge & leaving anywhere before right edge then open event is fired.

but if we swipe across the device to open the sidenav then side nav will appear but event is not fired..