newforms-admin: Fixed #6756 -- Flatpage 'Advanced options' fieldset i…

…s properly collapsed. Thanks, mb0@mb0.org.

git-svn-id: http://code.djangoproject.com/svn/django/branches/newforms-admin@7226 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/flatpages/models.py

@@ -35,7 +35,7 @@ def get_absolute_url(self):
 class FlatPageAdmin(admin.ModelAdmin):
     fieldsets = (
         (None, {'fields': ('url', 'title', 'content', 'sites')}),
-        ('Advanced options', {'classes': 'collapse', 'fields': ('enable_comments', 'registration_required', 'template_name')}),
+        ('Advanced options', {'classes': ('collapse',), 'fields': ('enable_comments', 'registration_required', 'template_name')}),
     )
     list_filter = ('sites',)
     search_fields = ('url', 'title')