diff --git a/README b/README
index 448c532..cbaa6a1 100644
--- a/README
+++ b/README
@@ -64,98 +64,4 @@ local_settings.py file or in the environment.
 Name                             Description
 ================================ ============================================
 TEMPLATE_VARS                    dictionnary of variables passed to templates
-FAVICON_URL                      URL pointing to the favicon
-WCSINST_DEFAULT_VARIABLES        default value for WCSINST new instances
-PROFILE_FORM_PLUGIN_FORM_CLASS   form class to use instead of the default one
-                                 for editing user profile
-
-Migrating users from W.C.S. to portail-citoyen
-----------------------------------------------
-
-You must use the management command named load-wcs-users. You must first link
-your W.C.S. instance to the portail-citoyen as a new SAML 2.0 service provider.
-The command accept the following options::
-
-
- --provider=<provider_name>
-
-   The name of the SAML 2.0 service provider in the portail citoyen configuratio.
-   This option is mandatory.
-
- --mapping=<wcs_field_name>:<user_field_name>
-
-   Map a user field identifier from W.C.S. to a local user model field.  This
-   option is mandatory.
-
- --extra=<package_path>
-
-   The path to a W.C.S. extra package to load (AuQuotidien for example).
-
- --verbose
-
-   Display information logged on the console
-
- --debug
-
-   display debugging information on the console
-
- --fake
-
-   Launch a dry run, i.e. do not save new user and new federation
-
- --help-mapping
-
-   Display the list of field available in the local user model and in the
-   W.C.S. user model
-
- --allow-not-mapped
-
-   Do not fail when a W.C.S. user field is not mapped to a local user field
-
-
-Importing role from W.C.S. into portail-citoyen
------------------------------------------------
-
-Your must first decide on a prefix for naming roles on the portail-citoyen
-side, default is 'AuQuo::'. Then federated roles must be actived and the
-prefix be configured in the `site-options.cfg` file of the W.C.S. host
-directory like this::
-
-    [options]
-    saml2_use_role = true
-    saml2_role_prefix = MyPrefix::
-
-Then you can use the `load-wcs-roles` command which accept the following options::
-
-    --url=<url>
-
-    URL of the W.C.S. instance from which we want to import roles (mandatory)
-
-    --prefix
-
-    The chosen federated role name prefix (mandatory)
-
-    --orig
-
-    The web-service identifier configured in `site-options.cfg` (mandatory)
-
-    --key
-
-    The web-service signature secret configured in `site-options.cfg` (mandatory)
-
-    --email
-
-    The email of the admin user used to access the fole list (mandatory)
-
-    --deleted-orphaned-roles
-
-    If actived delete federation roles starting with the given prefix which
-    does not exist on W.C.S. side.
-
-    --verbose
-
-    Display logs on console
-
-    --debug
-
-    Display logs on console and set log level to DEBUG
+PORTAIL_ADMIN_URL                URL of the global administration portal
diff --git a/portail_citoyen2/app_settings.py b/portail_citoyen2/app_settings.py
index 440293f..8779707 100644
--- a/portail_citoyen2/app_settings.py
+++ b/portail_citoyen2/app_settings.py
@@ -3,7 +3,9 @@ import sys
 from django.core.exceptions import ImproperlyConfigured
 
 class AppSettings(object):
-    __defaults = {}
+    __defaults = {
+            'PORTAIL_ADMIN_URL': None,
+    }
 
     def __init__(self, prefix):
         self.prefix = prefix
diff --git a/portail_citoyen2/context_processors.py b/portail_citoyen2/context_processors.py
index 79947dd..b363983 100644
--- a/portail_citoyen2/context_processors.py
+++ b/portail_citoyen2/context_processors.py
@@ -1,4 +1,7 @@
 from . import app_settings
 
 def template_vars(request):
-    return app_settings.TEMPLATE_VARS
+    ctx = app_settings.TEMPLATE_VARS.copy()
+    if app_settings.PORTAIL_ADMIN_URL:
+        ctx['PORTAIL_ADMIN_URL'] = app_settings.PORTAIL_ADMIN_URL
+    return ctx
diff --git a/portail_citoyen2/templates/admin/base_site.html b/portail_citoyen2/templates/admin/base_site.html
new file mode 100644
index 0000000..2e858ab
--- /dev/null
+++ b/portail_citoyen2/templates/admin/base_site.html
@@ -0,0 +1,29 @@
+{% extends "admin/base.html" %}
+{% load i18n admin_tools_menu_tags %}
+
+{% block title %}{{ title }} | {% trans 'Django site admin' %}{% endblock %}
+
+{% block extrastyle %}
+{{ block.super }}
+{% if user.is_active and user.is_staff %}
+{% if not is_popup %}
+{% admin_tools_render_menu_css %}
+{% endif %}
+{% endif %}
+{% endblock %}
+
+{% block branding %}
+{% if PORTAIL_ADMIN_URL %}
+<h1 id="site-name"><a href="{{ PORTAIL_ADMIN_URL }}">{% trans 'Administration portal' %}</a></h1>
+{% else %}
+<h1 id="site-name">{% trans 'Django administration' %}</h1>
+{% endif %}
+{% endblock %}
+
+{% block nav-global %}
+{% if user.is_active and user.is_staff %}
+{% if not is_popup %}
+{% admin_tools_render_menu %}
+{% endif %}
+{% endif %}
+{% endblock %}