- allow to activate checkboxes by row activation in treeviews
    - code cleanup in view_toggle_cb
    - fixed port display for IPSec
    - use system icons where possible, new wizard icons
    - added fallback for CellRendererCheck if icons are missing, size fixes
    - added tooltips for toolbar and menu entries (if needed)
    - improved more english texts (rhbz#395801) thanks to Paul W. Frields for
        the initial patch
    - fixed lokkit command problem for non english languages
    - using latest translations