Change documentation (issue #7)
This version introduces multiple enhancements:

Changed some polish stuff to english

Details of additions/deletions below:
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Modified:   /BLUE_FRAMEWORK/cfg/dtd/meta.dtd
            -- Modified --
               changed title attribute name from tytul to title

Modified:   /BLUE_FRAMEWORK/cfg/meta.xml
            -- Modified --
               changed title attribute name from tytul to title

Modified:   /BLUE_FRAMEWORK/packages/CORE/globals_class.php
            -- Modified --
               fixed documentation error for clean method