improve gift admin

admin.py

@@ -85,7 +85,7 @@ class RightsHolderAdmin(ModelAdmin):
     form = RightsHolderAdminForm
 
 class AcqAdmin(ModelAdmin):
-    fields = ("expires", "refreshes", )
+    readonly_fields = ('work', 'user', 'lib_acq', 'watermarked')
     search_fields = ['user__username']
     date_hierarchy = 'created'
 
@@ -177,9 +177,12 @@ class UserProfileAdmin(ModelAdmin):
     exclude = ('user',)
 
 class GiftAdmin(ModelAdmin):
-    list_display = ('giver', 'acq', 'to')
+    list_display = ('to', 'acq_admin_link', 'giver', )
     search_fields = ('giver__username', 'to')
-    exclude = ('giver', 'acq',) 
+    readonly_fields = ('giver', 'acq',) 
+    def acq_admin_link(self, gift):
+        return "<a href='/admin/core/acq/%s/'>%s</a>" % (gift.acq.id, gift.acq)
+    acq_admin_link.allow_tags = True
 
 class CeleryTaskAdmin(ModelAdmin):
     pass