permanent redirect for favicon

main.py

@@ -130,7 +130,7 @@ def home_post():
 
 @app.route('/favicon.ico') #Redirect to the static url of the favicon
 def favicon():
-    return redirect("/static/favicon.ico")
+    return redirect("/static/favicon.ico", code=301)
 
 @app.route('/<short_url>')
 def redirect_short_url(short_url):