Update french translation

[pyrog]

Close #287 and #288

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Please preserve this line to notify @lwinfree

[lwinfree]

Hi @pyrog! Thanks for this PR. Overall it looks good, but there are a few things I suggest changing:

• line 9: remove the space before !
• line 15: remove the space before ?
• line 29: the emphasis (the asterisks) should be on the word environnementales
• line 41: remove the spaces before the punctuation
• line 47: please use Individus instead of citoyen. People do not have to be citizens to participate
• line 155: seems to have some character rendering issues  
• line 160: remove the space before :

Thanks!

[pyrog]

line 9, 15, 41, 160

In french the space is mandatory before :, ? and ! 😉

line 155: seems to have some character rendering issues  

I run the Lecktor locally an the pages are generated without issue and displayed correctly.
(tested with Chrome, Firefox and Safari)

line 29: the emphasis (the asterisks) should be on the word environnementales

Ok, it's better and the page layout is not broken.

Note: It is on data in the english version:

line 47: please use Individus instead of citoyen. People do not have to be citizens to participate

I use citoyen because it sound better in french (mean people involved in the "city").
'individu' is connoted (used by the police to describe offender)
citoyen in french don't mean people with i.e. the nationality of the country, but people living in the country.

[lwinfree]

@pyrog I've learned something new today! No worries about using "citoyen" - it sounds like it doesn't have the same connotation as it does in English.