allow define custom logout uri

Fixes #234

lib/Lufi/Controller/Auth.pm

@@ -51,7 +51,12 @@ sub log_out {
             $c->logout;
         }
     }
-    $c->render(template => 'logout');
+
+    if ($c->config('logout_custom')) {
+        return $c->redirect_to($c->config('logout_custom'));
+    } else {
+        $c->render(template => 'logout');
+    }
 }
 
 1;

lufi.conf.template

@@ -101,6 +101,9 @@
     # optional, no domains allowed by default
     #allowed_domains => ['http://1.example.com', 'http://2.example.com'],
 
+    # String of the URL to be redirected to when accessing /logout
+    #logout_custom => 'https://sso.example.com/logout?redirect_uri=https%3A%2F%2Ffiat-tux.fr',
+
     # Define a path to the upload directory, where the uploaded files will be stored
     # You can define it relative to lufi directory or set an absolute path
     # Remember that it has to be in a directory writable by Lufi user