* Open the confirm dialog if exiting the grand prix editor with changes by escape key
* When launching the tutorial, use the last used device instead of the first keyboard
* When launching story mode, use the last used device instead of the first keyboard
* Make the kart color selection dialog more consistent with other dialogs
Includes:
* Add an icon button bar with containing actions to apply changes or to cancel them
* The kart only shows its straight frame, without animation; it is slightly smaller
* Adjust the vertical space between widgets, to try keeping the kart size larger
* Use a button bar for the video settings and custom camera settings dialog
