Change default language

[duron16]

Hello. At first, thanks you for cool extra!

I ran into a problem. I need change default language, with save url for SEO-optimization, exept main page. But I not find how do this. A few days I try different ideas and all them isn`t work. Default language now:

And this language should be made the default:

When I edit base_url and/or change default context in gateway plugin, I see 404-error on the inner pages and the redirect goes into a loop on other language version.

Please help me )