chg: [website] Added missing per_page optional arguments to the sighting API endpoint.

website/web/api/v1/bundle.py

@@ -51,6 +51,12 @@ parser.add_argument(
     type=str,
     help="Query for the meta JSON field. Example: meta=[{'tags': ['tcp']}]",
 )
+parser.add_argument(
+    "per_page",
+    type=int,
+    default=10,
+    help="Number of elements to return.",
+)
 
 # Response marshalling
 bundle_params_model = {