Add a new template engine od+mustache

models/redner_template.py

@@ -91,7 +91,11 @@
 
     language = fields.Selection(
         string=_("Language"),
-        selection=[("mustache", "mustache"), ("handlebar", "handlebar")],
+        selection=[
+            ("mustache", "mustache"),
+            ("handlebar", "handlebar"),
+            ("od+mustache", "od"),
+        ],
         default="mustache",
         required=True,
         help="templating language",