Update French and English translation

```
====================================================
   Not translatable strings in package templates
====================================================



====================================================
               Translation statistics
====================================================

i18n domain: ftw.book (primary)
100% - English (en)
100% - French (fr)
100% - German (de)

i18n domain: plone
100% - English (en)
100% - French (fr)
100% - German (de)
```

/cc @maethu