Merge branch 'Kerl/update_participant_admin' into 'master'

Incorpore le tirage dans `admin/participant`.

Dans la liste des participants, dans l'interface admin : 

- Affiche le tirage de chaque participant.
- Permet de filtrer par tirage

See merge request !45

bda/admin.py

@@ -16,7 +16,6 @@ class AttributionInline(admin.TabularInline):
     model = Attribution
 
 class ParticipantAdmin(admin.ModelAdmin):
-    #inlines = [ChoixSpectacleInline]
     inlines = [AttributionInline]
     def get_queryset(self, request):
         return Participant.objects.annotate(nb_places = Count('attributions'),
@@ -31,8 +30,9 @@ class ParticipantAdmin(admin.ModelAdmin):
         else: return u"0 €"
     total.admin_order_field = "total"
     total.short_description = "Total à payer"
-    list_display = ("user", "nb_places", "total", "paid", "paymenttype")
-    list_filter = ("paid",)
+    list_display = ("user", "nb_places", "total", "paid", "paymenttype",
+                    "tirage")
+    list_filter = ("paid", "tirage")
     search_fields = ('user__username', 'user__first_name', 'user__last_name')
     actions = ['send_attribs',]
     actions_on_bottom = True