Added alignToTop as an option to scrollIntoView
Added alignToTop as an option to scrollIntoView

The `scrollIntoView` keyword and behavior follows a W3C specification
already implemented by most browsers, except IE.
https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView

Bug: T299036
Change-Id: Ie822dc87bc5748985de5637cb35f1940837f64d3

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui