[Powertop] fr_FR translation and a hello

Hello, I'm just scribing to make an enhancement request and drop a translation file. The translation took about an hour with a friend who were talking to me in front of me (it was a bit hard I have to say sometimes). Anyway, I'm attaching the translation file to this message. I've just noticed that PowerTOP use a cachedir, `/var/cache/powertop' for me, to store or load a kind of profile. That's a good starting point because my request is about to save configuration or profile, say `~/.powertoprc' or `~/.config/powertop/profile' or something like that, that PowerTOP could load at start up time. That's what it seems to do at the moment but I have no way to tell PowerTOP to save any nor configure a somewhat power management profile to fits some needs. So exposing to the user what the application is just doing plus a daemon-ish mode to fit an automated usage without starting again and again by hand. Thanks, -tclover. Note: sorry for not signing my email and sign the translation file instead, but evolution just does not want to send my emails. sigh. I shall look around for a decent mail client.