Working tests and provider stats table.

Fix for tests and import error.

Added tests and updated for code review comments.

app/dao/templates_dao.py

@@ -1,16 +1,25 @@
+import uuid
 from app import db
 from app.models import (Template, Service)
 from sqlalchemy import asc
 
+from app.dao.dao_utils import (
+    transactional,
+    version_class
+)
 
+
+@transactional
+@version_class(Template)
 def dao_create_template(template):
+    template.id = uuid.uuid4()  # must be set now so version history model can use same id
     db.session.add(template)
-    db.session.commit()
 
 
+@transactional
+@version_class(Template)
 def dao_update_template(template):
     db.session.add(template)
-    db.session.commit()
 
 
 def dao_get_template_by_id_and_service_id(template_id, service_id):