- Update to 2.31.5
    - Build system has been changed to use waf
    - Overview gets a menu, drops toolbars and now supports date range browsing
    - Adjustments to starts and ends graph in statistics (should be more
        accurate)
    - Performance updates in graphics
    - HTML report was looking in the wrong place for the template
    - Adjustments for custom widgets to better work with themes
    - If dialog windows are called from commandline, make sure they shut down
        properly
    - Updated translations