dashboard: use absolute_import in dashboard modules

needed to add module dashboard.vm and sensibly import circle.vm

circle/dashboard/forms.py

+from __future__ import absolute_import
+
 from datetime import timedelta
 
 from django.contrib.auth.models import User

circle/dashboard/models.py

+from __future__ import absolute_import
+
 from itertools import chain
 from logging import getLogger
 

circle/dashboard/tables.py

+from __future__ import absolute_import
+
 from django.contrib.auth.models import Group, User
 from django_tables2 import Table, A
 from django_tables2.columns import (TemplateColumn, Column, BooleanColumn,

circle/dashboard/urls.py

-from django.conf.urls import patterns, url
+from __future__ import absolute_import
+from django.conf.urls import patterns, url, include
 
 from vm.models import Instance
 from .views import (

circle/dashboard/views.py

-from __future__ import unicode_literals
+from __future__ import unicode_literals, absolute_import
 
 from os import getenv
 import json
@@ -47,7 +47,7 @@ from vm.models import (
 )
 from storage.models import Disk
 from firewall.models import Vlan, Host, Rule
-from dashboard.models import Favourite, Profile
+from .models import Favourite, Profile
 
 logger = logging.getLogger(__name__)