French language + goodies

Hello,
I just add the translation file for **french language** to parseTime plus a few things:
- kind of bugfix: **"now" can be translated** (was hardcoded)
- new feature (useful but wrongly integrated - quite limited):
   in latest commit you'll find a minimalistic way to **support dates like "yesterday"**,
   it's not ignoring garbage btw ("football tomorrow" won't work...)

   > I hope you will integrate some bits, thanks for this code !
   > > I just spot the ``index.html`` mistake, ignore the change please...