Updated the wording for the French localization

Now the wording is the same as in the French App Store:
- "Rate" is translated to "Note"
- "Review" is translated to "Avis"

Note that the wording of the title was quite strange. "Votez %@" is
the wording one would use if someone is running for president.
Merge pull request #184 from creynaud/improve-french-wording

Updated the wording for the French localization