personnes: holiday services become mandatory

Closes #4107

calebasse/personnes/models.py

@@ -405,7 +405,8 @@ class Holiday(BaseModelMixin, models.Model):
             verbose_name=u'Type de congé')
     worker = models.ForeignKey(Worker, blank=True, null=True,
             verbose_name=u"Personnel")
-    services = models.ManyToManyField(Service, blank = True, verbose_name = u'Services')
+    services = models.ManyToManyField(Service, blank = False, null = False,
+                                      verbose_name = u'Services')
     start_date = models.DateField(verbose_name=u"Date de début",
         help_text=u'format: jj/mm/aaaa')
     end_date = models.DateField(verbose_name=u"Date de fin",

calebasse/personnes/templates/personnes/group_holiday_update_form.html

@@ -25,7 +25,7 @@
       <th colspan=2>Service</th>
     </tr>
     <tr id="services">
-      <td colspan=2>{{ form.services }}</td>
+      <td colspan=2>{{ form.services }}  {{ form.services.errors }}</td>
     </tr>
     <tr>
       <th>Type</<th><th>Commentaire</th>

calebasse/personnes/templates/personnes/holiday_group_form.html

@@ -25,7 +25,7 @@
       <th colspan=2>Service</th>
     </tr>
     <tr id="services">
-      <td colspan=2>{{ form.services }}</td>
+      <td colspan=2>{{ form.services }} {{ form.services.errors }}</td>
     </tr>
     <tr>
       <th>Type</<th><th>Commentaire</th>