Use default language for new users from config

[mauthi]

This is a feature request.

Description

New users should use language from config.app.locale

Steps to Reproduce

Set config value to <> en
create new user
login with new user

Expected behavior

New user should have language of config.app.locale

Actual behavior

New user has en as default language

[aocneanu]

It seems that there is already something in place for this.

I don't think that it's a good time to change things in this area, at least until we will have a proper preferences module / flow.

So for now just set the value that you desire here