Updated French translation [JB]

ModAudio: option to force music volume control
QS Tiles: added additional QuickApp Tile (oh well...)
QS Tiles: added USB Tethering Tile
BatteryPercentText: more charging styles (none, static, animated)
GB Actions: added shortcuts for media control
Lockscreen custom background: added option for setting opacity
GB Actions: added shortcut for launching Google Now
Lockscreen: option to set statusbar clock visibility
Update strings.xml
Merge pull request #275 from ch-vox/patch-3

Updated French translation [JB]