Add autocomplete for members in offersubsription form

coin/offers/admin.py

@@ -1,6 +1,6 @@
 from django.contrib import admin
 from coin.offers.models import Offer, Service, OfferSubscription
-
+import autocomplete_light
 
 class OfferAdmin(admin.ModelAdmin):
     list_display = ('service', 'name', 'billing_period', 'period_fees',
@@ -18,6 +18,7 @@ class OfferSubscriptionAdmin(admin.ModelAdmin):
                 'commitment',
                 'resign_date'
              )
+    form = autocomplete_light.modelform_factory(OfferSubscription)
 
 admin.site.register(Service)
 admin.site.register(Offer, OfferAdmin)