Also fixing some figures and images style.

Fix #141

So that the details are printed in the webserver log and a specific page is
displayed to the client (without the details).

On vire une offre de test

urllib3 must be <1.25 for package attrs

#158

urllib3 must be <1.25 for package attrs

on enlève une section inutilement oubliée

#58 (https://gitlab.math.unistra.fr/groupe-calcul/website/issues/58#note_8628)

urllib3 must be <1.25 for package attrs

spécial @haefele (#155)

Fix typo

+ doc evaluation
+ doc renouvellement
+ style bouton

- utilisation du fichier include.rst
- partenaires
- GdR
- CNRS (logo)

#58

(Correct typo in title)