message in errors disappear (issue #57)
This version introduces multiple enhancements:

Fixed missing many translations in errors additional messages and problem with translation from core files

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

Modified:   /BLUE_FRAMEWORK/cfg/lang/core_en-GB.php
            -- Added --
               missing translation

Modified:   /BLUE_FRAMEWORK/cfg/lang/core_pl-PL.php
            -- Added --
               missing translation

Modified:   /BLUE_FRAMEWORK/packages/CORE/error_class.php
            -- Modified --
               addError method changed default $mod value, modified loop transform founded language codes
               render method, changed code convention

Modified:   /BLUE_FRAMEWORK/modules/modul1/modul1.php
            -- Modified --
               errors messages, removed some documentation