Merge pull request #1 from C3C0/master

added French translation for :
- Engineering mode shortcut
- Dual SIM ringer
Merge pull request #2 from C3C0/master

Updates
Merge pull request #3 from C3C0/master

Latest updates
Merge pull request #4 from C3C0/master

Updates for upcoming version 1.5
Updated French translation

New strings translated + some useless punctuation marks erased
Merge pull request #5 from C3C0/master

ModPhone: flip action while ringing
Merge pull request #30 from ch-vox/master

Updated French translation GravityBox 1.5.2