layout + data
Template header+footer+nav bootstrap
Ajout Interface session
Redirection + .htaccess
Ajout page error (404)
Merge branch 'form_creation_session' into interface_admin

Conflicts:
	src/layout/footer.php
	src/layout/header.php
	src/layout/nav.php
	src/public/css/style.css
	src/public/index.php