Version 2.0.0-M1 has been released.
Moving all related non-resolved issues to the next version.
Version 2.0.0-M3 has been released a couple months ago.
Assigned the remaining opened JIRA to the next iteration (2.0.0-M4).
I think this is not to the server to tell which LOCALE to use. There are many other ways to set the LOCALE when the server is launched, instead of configuring it...