Add param to control whether the neew user can access the non-public API.
Add flag to control whether new users have access to the non public api.
Update to handle new version of  MediaWords::DBI::Auth::add_user_or_return_error_messag
Initial update to hanlde new version of MediaWords::DBI::Auth::add_user_or_return_error_message
Add nonpublic API access to web form to create user.
Make sure the default created user can access the nonpublic api.
Merge branch 'master' into RELEASE_20140325