diff --git a/combo/locale/fr/LC_MESSAGES/django.po b/combo/locale/fr/LC_MESSAGES/django.po
index 88a4b7f7..a2610947 100644
--- a/combo/locale/fr/LC_MESSAGES/django.po
+++ b/combo/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: combo 0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-07-03 08:41+0000\n"
+"POT-Creation-Date: 2019-07-31 13:09+0000\n"
 "PO-Revision-Date: 2019-05-15 07:37+0200\n"
 "Last-Translator: Thomas NOËL <tnoel@entrouvert.com>\n"
 "Language: French\n"
@@ -188,11 +188,11 @@ msgstr "La durée minimale de réservation est %s."
 
 #: apps/calendar/models.py:33 apps/dataviz/models.py:29
 #: apps/dataviz/models.py:67 apps/gallery/models.py:30
-#: apps/gallery/models.py:57 apps/lingo/models.py:620 apps/lingo/models.py:727
+#: apps/gallery/models.py:57 apps/lingo/models.py:620 apps/lingo/models.py:728
 #: apps/maps/models.py:250 apps/newsletters/models.py:42 apps/wcs/models.py:43
-#: apps/wcs/models.py:124 data/models.py:126 data/models.py:855
-#: data/models.py:909 data/models.py:955 data/models.py:1277
-#: data/models.py:1406
+#: apps/wcs/models.py:124 data/models.py:126 data/models.py:857
+#: data/models.py:911 data/models.py:958 data/models.py:1287
+#: data/models.py:1419
 msgid "Title"
 msgstr "Titre"
 
@@ -260,9 +260,9 @@ msgid "Data Visualisation"
 msgstr "Visualisation de données"
 
 #: apps/dataviz/models.py:30 apps/dataviz/models.py:68
-#: apps/notifications/models.py:76 apps/wcs/models.py:44 data/models.py:856
-#: data/models.py:910 data/models.py:956 data/models.py:1278
-#: data/models.py:1408
+#: apps/notifications/models.py:76 apps/wcs/models.py:44 data/models.py:858
+#: data/models.py:912 data/models.py:959 data/models.py:1288
+#: data/models.py:1421
 msgid "URL"
 msgstr "URL"
 
@@ -665,7 +665,7 @@ msgstr "Transactions récentes"
 msgid "Basket Link"
 msgstr "Lien vers le panier"
 
-#: apps/lingo/models.py:621 data/models.py:738 data/models.py:743
+#: apps/lingo/models.py:621 data/models.py:740 data/models.py:745
 msgid "Text"
 msgstr "Texte"
 
@@ -697,34 +697,34 @@ msgstr "Indigo/PES v2"
 msgid "ROLMRE"
 msgstr "ROLMRE"
 
-#: apps/lingo/models.py:728
+#: apps/lingo/models.py:729
 msgid "TIPI payment service URL"
 msgstr "URL du service de paiement TIPI"
 
-#: apps/lingo/models.py:729 apps/lingo/templates/lingo/regie_list.html:5
+#: apps/lingo/models.py:730 apps/lingo/templates/lingo/regie_list.html:5
 #: apps/lingo/templates/lingo/regie_list.html:13
 #: apps/lingo/templates/lingo/transaction_list.html:8
 msgid "Regies"
 msgstr "Régies"
 
-#: apps/lingo/models.py:729
+#: apps/lingo/models.py:730
 msgid "separated by commas"
 msgstr "régies séparées par des virgules"
 
-#: apps/lingo/models.py:730
+#: apps/lingo/models.py:731
 msgid "Control protocol"
 msgstr "Protocole de contrôle"
 
-#: apps/lingo/models.py:731 apps/lingo/models.py:732 apps/lingo/models.py:733
-#: apps/lingo/models.py:734 apps/lingo/models.py:735 apps/lingo/models.py:736
+#: apps/lingo/models.py:733 apps/lingo/models.py:734 apps/lingo/models.py:735
+#: apps/lingo/models.py:736 apps/lingo/models.py:737 apps/lingo/models.py:738
 msgid "Default value to be used in form"
 msgstr "Valeur par défaut à utiliser dans le formulaire"
 
-#: apps/lingo/models.py:737
+#: apps/lingo/models.py:739
 msgid "Test mode"
 msgstr "Mode test"
 
-#: apps/lingo/models.py:741
+#: apps/lingo/models.py:743
 msgid "TIPI Payment Form"
 msgstr "Formulaire de paiement TIPI"
 
@@ -1408,7 +1408,7 @@ msgstr "Icône du marqueur"
 msgid "Icon colour"
 msgstr "Couleur de l'icône"
 
-#: apps/maps/models.py:104 data/models.py:1281
+#: apps/maps/models.py:104 data/models.py:1292
 msgid "Cache duration"
 msgstr "Durée de cache"
 
@@ -1759,7 +1759,7 @@ msgstr "Activer la possibilité de s'abonner à des notifications « push »"
 msgid "External URL"
 msgstr "URL externe"
 
-#: apps/pwa/models.py:108 data/models.py:858
+#: apps/pwa/models.py:108 data/models.py:860
 msgid "Internal link"
 msgstr "Lien interne"
 
@@ -2027,7 +2027,8 @@ msgstr "URL de redirection"
 msgid "Public"
 msgstr "Publique"
 
-#: data/models.py:140 data/models.py:504 manager/forms.py:121
+#: data/models.py:140 data/models.py:504 manager/forms.py:69
+#: manager/forms.py:126
 msgid "Groups"
 msgstr "Groupes"
 
@@ -2053,64 +2054,64 @@ msgstr "suppression"
 msgid "Restrict to unlogged users"
 msgstr "Restreindre aux utilisateurs non connectés"
 
-#: data/models.py:520
+#: data/models.py:522
 msgid "Loading..."
 msgstr "Chargement…"
 
-#: data/models.py:794
+#: data/models.py:796
 msgid "Fortune"
 msgstr "Fortune du jour"
 
-#: data/models.py:816
+#: data/models.py:818
 msgid "Unlock Marker"
 msgstr "Marqueur de déblocage"
 
-#: data/models.py:824
+#: data/models.py:826
 msgid "Depth"
 msgstr "Profondeur"
 
-#: data/models.py:826
+#: data/models.py:828
 msgid "Initial Level"
 msgstr "Niveau initial"
 
-#: data/models.py:827
+#: data/models.py:829
 msgid "Same as page"
 msgstr "Identique à la page"
 
-#: data/models.py:830
+#: data/models.py:832
 msgid "Root Page"
 msgstr "Page racine"
 
-#: data/models.py:835
+#: data/models.py:837
 msgid "Menu"
 msgstr "Menu"
 
-#: data/models.py:859
+#: data/models.py:861
 msgid "Anchor"
 msgstr "Ancre"
 
-#: data/models.py:864
+#: data/models.py:866
 msgid "Link"
 msgstr "Lien"
 
-#: data/models.py:911
+#: data/models.py:913
 msgid "Maximum number of entries"
 msgstr "Nombre maximum d'entrées"
 
-#: data/models.py:917
+#: data/models.py:920
 msgid "RSS/Atom Feed"
 msgstr "Flux RSS/Atom"
 
-#: data/models.py:957
+#: data/models.py:960
 msgid "Empty label"
 msgstr "Libellé pour l'option par défaut"
 
-#: data/models.py:958 data/models.py:967
+#: data/models.py:961 data/models.py:970
 #: manager/templates/combo/page_view.html:25
 msgid "Parameters"
 msgstr "Paramètres"
 
-#: data/models.py:959
+#: data/models.py:962
 msgid ""
 "Must be a JSON list, containing dictionaries with 3 keys: name, value and "
 "optionnally roles; name must be a string, value must be a dictionary and "
@@ -2123,65 +2124,70 @@ msgstr ""
 "rôle.  Les noms de rôles permettent de restreindre la visibilité de "
 "l'élément."
 
-#: data/models.py:977
+#: data/models.py:980
 msgid "it must be a list"
 msgstr "doit être une liste"
 
-#: data/models.py:979
+#: data/models.py:982
 msgid "it must be a list of dictionaries"
 msgstr "doit être une liste de dictionnaires"
 
-#: data/models.py:981
+#: data/models.py:984
 msgid "permitted keys in the dictionaries are name, roles and value"
 msgstr "les clés autorisées sont name, roles et value"
 
-#: data/models.py:986
+#: data/models.py:989
 msgid "roles must be a list"
 msgstr "roles doit être une liste"
 
-#: data/models.py:988
+#: data/models.py:991
 msgid "roles must be a list of strings"
 msgstr "roles doit être une liste de chaînes"
 
-#: data/models.py:990
+#: data/models.py:993
 msgid "role's names must be unique in a list of roles"
 msgstr "les noms de rôle doivent être uniques"
 
-#: data/models.py:994
+#: data/models.py:997
 #, python-format
 msgid "role(s) %s do(es) not exist"
 msgstr "Le ou les rôles %s n'existent pas"
 
-#: data/models.py:996
+#: data/models.py:999
 msgid "name must be a string"
 msgstr "name doit être une chaîne"
 
-#: data/models.py:1000
+#: data/models.py:1003
 msgid "names must be unique"
 msgstr "Les noms doivent être uniques"
 
-#: data/models.py:1006
+#: data/models.py:1009
 #, python-format
 msgid "Parameters does not validate the expected schema: %s"
 msgstr "Les paramètres ne correspondent pas au schéma attendu : %s"
 
-#: data/models.py:1046
+#: data/models.py:1049
 msgid "Same as parent"
 msgstr "Identique à la page parente"
 
-#: data/models.py:1279
+#: data/models.py:1282
+#, python-format
+msgid "syntax error: %s"
+msgstr "erreur de syntaxe : %s"
+
+#: data/models.py:1289
 msgid "Display Template"
 msgstr "Gabarit d'affichage"
 
-#: data/models.py:1282
+#: data/models.py:1293
 msgid "Force asynchronous mode"
 msgstr "Forcer le mode asynchrone"
 
-#: data/models.py:1284
+#: data/models.py:1295
 msgid "Variable names"
 msgstr "Noms des variables"
 
-#: data/models.py:1285
+#: data/models.py:1296
 msgid ""
 "Comma separated list of query-string variables to be copied in template "
 "context"
@@ -2189,19 +2195,19 @@ msgstr ""
 "Liste des variables de la query-string à envoyer dans le contexte pour le "
 "template (noms séparés par des virgules)"
 
-#: data/models.py:1287
+#: data/models.py:1298
 msgid "Request timeout"
 msgstr "Expiration des requêtes"
 
-#: data/models.py:1288
+#: data/models.py:1299
 msgid "In seconds. Use 0 for default system timeout"
 msgstr "En secondes.  Utiliser 0 pour le délai d'expliration par défaut."
 
-#: data/models.py:1291
+#: data/models.py:1304
 msgid "JSON Prototype"
 msgstr "Prototype JSON"
 
-#: data/models.py:1318
+#: data/models.py:1331
 msgid "Extra"
 msgstr "Extra"
 
@@ -2210,35 +2216,35 @@ msgstr "Extra"
 msgid "Missing groups: %s"
 msgstr "Rôles manquants : %s"
 
-#: manager/forms.py:45
+#: manager/forms.py:49
 msgid "Slug must be unique"
 msgstr "Le slug doit être unique"
 
-#: manager/forms.py:114 manager/templates/combo/manager_edit_cell_block.html:18
+#: manager/forms.py:119 manager/templates/combo/manager_edit_cell_block.html:18
 msgid "Visibility"
 msgstr "Visibilité"
 
-#: manager/forms.py:115
+#: manager/forms.py:120
 msgid "Everybody"
 msgstr "Tout le monde"
 
-#: manager/forms.py:116
+#: manager/forms.py:121
 msgid "Logged users"
 msgstr "Utilisateurs connectés"
 
-#: manager/forms.py:117
+#: manager/forms.py:122
 msgid "Unlogged users"
 msgstr "Utilisateurs non connectés"
 
-#: manager/forms.py:118
+#: manager/forms.py:123
 msgid "Users with one of these groups"
 msgstr "Utilisateurs avec un de ces rôles"
 
-#: manager/forms.py:119
+#: manager/forms.py:124
 msgid "Users with none of these groups"
 msgstr "Utilisateurs sans aucun de ces rôles"
 
-#: manager/forms.py:169
+#: manager/forms.py:174
 msgid "Site Export File"
 msgstr "Fichier d'export de site"
 
@@ -2625,27 +2631,27 @@ msgstr "Barre latérale"
 msgid "Error sending data."
 msgstr "Erreur à l'envoi des données."
 
-#: public/views.py:308
+#: public/views.py:331
 msgid "Style Demo"
 msgstr "Démonstration des styles"
 
-#: public/views.py:339
+#: public/views.py:362
 msgid "Select"
 msgstr "Sélectionner"
 
-#: public/views.py:350
+#: public/views.py:373
 msgid "Success notice"
 msgstr "Message de succès"
 
-#: public/views.py:351
+#: public/views.py:374
 msgid "Info notice"
 msgstr "Message d'information"
 
-#: public/views.py:352
+#: public/views.py:375
 msgid "Warning notice"
 msgstr "Message d'avertissement"
 
-#: public/views.py:353
+#: public/views.py:376
 msgid "Error notice"
 msgstr "Message d'erreur"