add rebuild tool
diff --git a/xos/core/models/xosmodel.py b/xos/core/models/xosmodel.py
index ad021d3..c632f08 100644
--- a/xos/core/models/xosmodel.py
+++ b/xos/core/models/xosmodel.py
@@ -19,3 +19,11 @@
 #    def can_update(self, user):
 #        return user.can_update_site(self.site, allow=['tech'])
 
+    def rebuild(self):
+        for service_controller in self.service_controllers.all():
+            for scr in service_controller.service_controller_resources.all():
+               scr.save()
+            service_controller.save()
+        self.save()
+
+