Fix deleted barman on user account

# Conflicts:
#	locale/fr/LC_MESSAGES/django.po

core/templates/core/user_account_detail.jinja

@@ -30,7 +30,11 @@
               - {{ purchase.date|localtime|time(DATETIME_FORMAT) }}
             </td>
             <td>{{ purchase.counter }}</td>
-            <td><a href="{{ purchase.seller.get_absolute_url() }}">{{ purchase.seller.get_display_name() }}</a></td>
+            {% if not purchase.seller %}
+              <td>{% trans %}Deleted User{% endtrans %}</td>
+            {% else %}
+              <td><a href="{{ purchase.seller.get_absolute_url() }}">{{ purchase.seller.get_display_name() }}</a></td>
+            {% endif %}
             <td>{{ purchase.label }}</td>
             <td>{{ purchase.quantity }}</td>
             <td>{{ purchase.quantity * purchase.unit_price }} €</td>

locale/fr/LC_MESSAGES/django.po

@@ -2344,6 +2344,10 @@ msgstr "Etickets"
 msgid "User has no account"
 msgstr "L'utilisateur n'a pas de compte"
 
+#: core/templates/core/user_account_detail.jinja
+msgid "Deleted User"
+msgstr "Utilisateur supprimé"
+
 #: core/templates/core/user_account_detail.jinja
 #: counter/templates/counter/last_ops.jinja
 #: counter/templates/counter/refilling_list.jinja
@@ -5515,3 +5519,6 @@ msgstr "Vous ne pouvez plus écrire de commentaires, la date est passée."
 #, python-format
 msgid "Maximum characters: %(max_length)s"
 msgstr "Nombre de caractères max: %(max_length)s"
+
+#~ msgid "There is no page in this website."
+#~ msgstr "Il n'y a pas de page sur ce site web."