Can you explain how to install new language? I did everything according to wiki, except for editing Languages.js, since there is no such file in my language dir.
No it's not necessary anymore. Youjust have to add it to languages.inc.php and it should be selectable. You might need to run install/upgrade.php first to clear the cache.
@verde We depend on the community for most translations. So I don't know. Hopefully a Romanian will translate it someday.
@Mikeyy The language system changed. We dropped the *.js translation. We merged the old js language into the php language files. This works for 95%. So most of it has been preserved.