Revert "Commit Captcha"

This reverts commit 59dcee534a610d703b7f9136dcea5026eda9b94d.
Revert "Competence et Themes"

This reverts commit 71b4ed7a462f964a125bf20c4ad22fb06d04d7dd.
remise en place du catpcha
modif layout_controller
re-commit compétences et thèmes