Updated French translation [KK]

ModStatusBar: Data Traffic Monitor revamped
Icon Picker: added icons for Calculator, Skype and Viber
QS Tiles: reorganized tile specific settings
QS Tiles: Alarm tile settings
QS Tiles: Timeout modes for the stay awake tile
QS Tiles: added tile for controlling lockscreen state
Traffic meter: option to show only while download active
Merge pull request #635 from ch-vox/patch-54

Updated French translation [KK]