Make scoreboard caching only cache the score table (#1586)

* Make scoreboard caching only cache the score table instead of the entire page
* Closes #1584

tests/api/v1/test_scoreboard.py

@@ -1,6 +1,8 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+from flask_caching import make_template_fragment_key
+
 from CTFd.cache import clear_standings
 from tests.helpers import (
     create_ctfd,
@@ -40,13 +42,19 @@ def test_scoreboard_is_cached():
             assert app.cache.get("view/api.scoreboard_scoreboard_detail")
 
             # Check scoreboard page
-            assert app.cache.get("view/scoreboard.listing") is None
+            assert (
+                app.cache.get(make_template_fragment_key("public_scoreboard_table"))
+                is None
+            )
             client.get("/scoreboard")
-            assert app.cache.get("view/scoreboard.listing")
+            assert app.cache.get(make_template_fragment_key("public_scoreboard_table"))
 
             # Empty standings and check that the cached data is gone
             clear_standings()
             assert app.cache.get("view/api.scoreboard_scoreboard_list") is None
             assert app.cache.get("view/api.scoreboard_scoreboard_detail") is None
-            assert app.cache.get("view/scoreboard.listing") is None
+            assert (
+                app.cache.get(make_template_fragment_key("public_scoreboard_table"))
+                is None
+            )
     destroy_ctfd(app)