Fix language select (issue #9)
This version introduces multiple enhancements:

Fixed problem with translation and localization when language code changed

Details of additions/deletions below:
--------------------------------------------------------------

Modified:   /BLUE_FRAMEWORK/packages/CORE/lang_class.php
            -- Modified --
               __construct all parts responsible to set localization replaced by _setLanguageLocalization method
            -- Added --
               _setLanguageLocalization method to set language and localization