On small screen devices such as iPhone targets, the save file dialog is
using a non-native dialog, and it doesn't fit the screen real estate to
the extent that the [Ok] button is clipped away.
In addition, the open file dialog and the save file dialog doesn't
cooperate very well on platforms such as iOS without more plumbing.
Since using the file dialog is out of the scope for this example we
remove all usages of it.
Pick-to: 6.5
Change-Id: Ie165355ed0b671d93e44d2d55791156367b0ea5c
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
4dbb07f614