LPS-42287 On a mobile device, it is difficult to scroll through page …

...igation without dragging the pages

@jonmak08

Make sure to test with a page that has child pages. There are two reasons that the drag handle isn't aligned   to the right. One is that that's where the caret is located for nav items with children. The second is that on some mobile browsers have native actions when dragging near the edge of the screen, for example, if the handles were aligned to the right, in Chrome dragging the nav items would try to switch tabs.