Fix for time package
This version introduces multiple enhancements:

Fixed some small errors ic methods and documentation

Details of additions/deletions below:
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Modified:   /BLUE_FRAMEWORK/packages/time/date_class.php
            -- Modified --
               getDifference and __toString methods documentation

Modified:   /BLUE_FRAMEWORK/packages/time/simpleDate_class.php
            -- Modified --
               getDayName method, added return FALSE walue if method has some wrong data
               getDayInMonth and getMonth methods documentation