French Translation

Hello,

<b>I updated fr.js to be up-to-date with Moot's latest version. I have also fixed a translation.</b>
(This fixes #24)

But there's a little problem with French translation: in French, only the first word is capitalized. For example, it should be <em>"Ne plus surveiller"</em> (unwatch) instead of <em>"Ne Plus Surveiller"</em>.

Thank you!
Léo