I have disabled globilization for a site and selected Swedish as the only active language in admin mode. In edit mode I have selected Swedish as the only language in the Root page language settings. But still the root page says 'Language: en'. 

I could not find a setting when installing the site to choose a specific default language. I even tried to manually change language branch in the database tables but then I could not start the site. 

Is there any way to change the language of the root page? Or is it not important at all, maybe it's enough to set the language on the start page?

My goal is to initially build a site in Swedish, and later on add English and perhaps some other language.