TODO

Keyboard settings
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  * The default values of the sliders don't make sence. I think we should
    also show the slider value and add a tooltip to the slide what the
    value actually stands for, like in the mouse dialog.
    The maximum values also seem to be a bit high.
  * IMPORTANT (for the final release): Update the property-changed 
    handler so that they it adds a new row for new properties
  * IMPORTANT (for the final release): Improve the libfrap code for
    shortcuts. It could be less complicated.
  * IMPORTANT (for the final release): Hard-coded default shortcuts and
    an option to reset them to defaults (see xfwm4).


Mouse Settings (Nick)
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  * Try to make inputproto 1.4.0 and libxi 1.2.0 optionnal.

Settings Manager
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  * Add embed support to all dialogs (not only those in xfce4-settings).
  * Figure out a way to avoid the black glitches that happen when 
    embedding dialogs into the main dialog sometimes.
  * Come up with a solution for help buttons (maybe using an additonal
    .desktop file key with a help URL for each settings dialog?).
  * Maybe make addding dialog-specific buttons to the button bar of the
    main dialog possible, dunno.