* Correction of spelling mistakes
* Correction of mistakes on addresse -> adresse
* Correction of mistakes on fermés -> fermée ("fermée" refers to "question")
* Correction of a spelling mistake (A propos -> À propos)
* fix(spelling correction): editeur -> Éditeur
* fix(translations): some translation improvements
* one missing translation (not sure how, but I've obviously missed it with my
previous pull request...)
* enhanced two translations which weren't quite correct in French
* add some translations for 1.8.0
* add a whitespace before ':'
* fix a dubious translation
* reorder some lines to match the order of the en lang file
(it makes it easier to spot missing translations)