I am playing around with a D8 site (8.0.0-beta6) and having trouble locating where some of the controls have gone. During the initial installation procedure I selected a non-English localization (Turkish). Subsequently putting the site into maintenance mode does indeed show the Turkish localized default maintenance message.
The trouble is I want a custom message. Entering one in the box on the maintenance page (I'm viewing the Administrator site using the same default locale) has no effect on the message displayed. Apparently this message changes the English only because if I add
/en to by site URL I get the English maintenance mode page and header, but with my custom Turkish message below it.
Where does one change custom localized maintenance mode messages?