[damned-lies] Allow running under Django 3.1

[Claude Paroz <claudep src gnome org>]

commit b68372d616c578967a7c66c86da76b01923f9693
Author: Claude Paroz <claude 2xlibre net>
Date:   Sat Aug 15 14:51:30 2020 +0200

    Allow running under Django 3.1

 requirements.txt | 4 ++--
 stats/signals.py | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/requirements.txt b/requirements.txt
index c696af9c..11edd1cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
-django>=2.2.9,<3.1
+django>=3,<3.2
 pillow
 mysqlclient
 social-auth-app-django==4.0.0
 django-debug-toolbar
-markdown==3.0.1
+markdown==3.2.2
 pyicu==2.3.1  # 2.4.2 fails to compile on some platforms
 translate-toolkit>=2.2.0
diff --git a/stats/signals.py b/stats/signals.py
index d59285fa..e8c6910d 100644
--- a/stats/signals.py
+++ b/stats/signals.py
@@ -1,3 +1,4 @@
 import django.dispatch
 
-pot_has_changed = django.dispatch.Signal(providing_args=["potfile", "branch", "domain"])
+# Args are: potfile, branch, domain
+pot_has_changed = django.dispatch.Signal()