Update fr.json

Updated translation of french version of the website.
update layout, add more comments
add more notes
add tarsnap message
Merge pull request #147 from Spirateandacookie/patch-1

Update fr.json
Merge branch 'master' of github.com:nylira/prism-break
added Autistici/Inventati
Merge pull request #2 from nylira/master

Sync