[0.14.17] Other settings not saved when pressing escape

[Killerbee]

When pressing escape in the "Other settings" menu the changes are not saved.
This issue is similar to viewtopic.php?f=11&t=30319

[daniel34]

The Sounds and Control settings do save when pressing Escape, the Graphics and Other settings do not. I'm not sure what the ideal behavior is, but it should at least be consistent/obvious to the user.

[posila]

Duplicate of viewtopic.php?f=173&t=32520 (kind of)
For 0.15 we plan to replace "Back" button with pair of "Confirm", "Cancel"; where Escape would be understood as cancel (and maybe Enter as confirm)