template:
	modified: monetablissement/index.html	
	<!-- test acceuil utilisateur -->
	{% if logged_user %}					
		<h3>Bienvenue  {{logged_user.first_name}} </h3>
	{% endif %}
views:
	modified: login, extend the request object to support user session
	add request.session['logged_user_id'] = logged_user_id

	add: get_logged_user_from_request(request)
	function to check user authentification 
	to protect private page/generate custom page

	modified: welcome()
	add call to get_logged_user_from_request(request)
	
	modified: index(request, logged_user=None, *args)
	add kwarg logged_user
	extend context object if logged_user