Add a "Behavior on contentY" for the tiles area Flickable so that the scrolling animates when going to the bottom to pin a tile and going back to the top with Back or Start. (See comment on needing to use the function to go to the bottom; maybe this won't be as needed? But we should check if it's being scrolled programatically.)

[DrewNaylor]

Should make it look smoother.

[DrewNaylor]

I also need to use the function that makes it go to the end instead of setting contentY when pinning a tile.