Workaround for a very annoying issue. For some reason, policy handlers
cannot import models globally
diff --git a/planetstack/model_policies/model_policy_User.py b/planetstack/model_policies/model_policy_User.py
index 1b1895e..6118a7b 100644
--- a/planetstack/model_policies/model_policy_User.py
+++ b/planetstack/model_policies/model_policy_User.py
@@ -1,6 +1,8 @@
 from core.models import *
 
 def handle(user):
+	from core.models import Deployment,SiteDeployments,UserDeployments
+	from collections import defaultdict
 	deployments = Deployment.objects.all()
 	site_deployments = SiteDeployments.objects.all()
 	site_deploy_lookup = defaultdict(list)