Add more strings for moved sites

Found on the freewheeling website:

    http://freewheeling.sourceforge.net/

    The Freewheeling SVN codebase here on Sourceforge is no longer being maintainted!
    The original SVN repo has been converted to git and future development will take
    place on the github free-wheeling team fork https://github.com/free-wheeling/freewheeling/.
    The wiki documentation has also been restored and is now hosted on github.