Added custom 404 display and login redirect

ref-test/main.py

@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from flask import Flask, flash, request
+from flask import Flask, flash, request, render_template
 from flask.helpers import url_for
 from flask.json import jsonify
 from flask_bootstrap import Bootstrap
@@ -77,4 +77,8 @@ if __name__ == '__main__':
     def _get_id_from_cookie():
         return dict(get_id_from_cookie = get_id_from_cookie)
 
+    @app.errorhandler(404)
+    def _404_handler(e):
+        return render_template('/quiz/404.html'), 404
+
     app.run(host=app.config['APP_HOST'])