Feature Flags: Generically deal with HTTP-based feature flags.

* Define a default `FEATURE_FLAGS_HTTP` configuration variable that's
  an empty list to help defining http-based feature flags that can be
  used to turn on/off features
* Build macro to include hidden fields for feature flags where
  necessary.
* Extend flask's `url_for` function to deal with defined feature flags
  in a mostly transparent way

1 files changed, 1 insertions, 1 deletions

diff --git a/uploader/samples/views.py b/uploader/samples/views.py
index 4705a96..f8baf7e 100644
--- a/uploader/samples/views.py
+++ b/uploader/samples/views.py
@@ -7,13 +7,13 @@ from pathlib import Path
 from redis import Redis
 from flask import (flash,
                    request,
-                   url_for,
                    redirect,
                    Blueprint,
                    current_app as app)
 
 from uploader import jobs
 from uploader.files import save_file
+from uploader.flask_extensions import url_for
 from uploader.ui import make_template_renderer
 from uploader.authorisation import require_login
 from uploader.input_validation import is_integer_input