Slight tags modifications
cmus key bindings support
Fix error message for brightness

FIXIT : the brightness management is not really working yet
Correctly deal with the mail tag and clients
Use vicious as git submodules
Display CMUS data as widget
Load nm-applet on start
Change default displayed data
Correctly handle new cmus widget in vicious
Update requirements : nm-applet
Wallpaper is now handle natively
Wifi widget work fine now

Change the icon.

Adapt the lib/iwlist file to my own configuration.
Adapt rc/widget according to my need and configuration.
Enhance display of Cmus widget