Update electricity consumption numbers for BTC

See merge request !1

  - Updated KWh taken from the cited source's source
    (https://digiconomist.net/bitcoin-energy-consumption)
  - Updated number of days of french households based on the average
    consumption given by the Que Choisir association
    (https://www.choisir.com/energie/articles/104333/la-consommation-electrique-moyenne-des-francais-en-2020)

supprime sakia
prépare la ré-écriture de la page monnaire libre

retire les mentions de dunitrust et juniter

clarification documentation
changement chemin
déplacement liste module vers page modules

other option is to add [toc] tag directly inside content

et ajout de liens

hash de commit :
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