from django.http import HttpResponse
from django.utils import simplejson as json
from django.utils.html import escape
+from mptt.admin import MPTTModelAdmin
+
from philo.models import Tag, Attribute
from philo.models.fields.entities import ForeignKeyAttribute, ManyToManyAttribute
from philo.admin.forms.attributes import AttributeForm, AttributeInlineFormSet
from philo.admin.widgets import TagFilteredSelectMultiple
from philo.forms.entities import EntityForm, proxy_fields_for_entity_model
-from mptt.admin import MPTTModelAdmin
COLLAPSE_CLASSES = ('collapse', 'collapse-closed', 'closed',)