Add a bell curve graph and total points calculation (#1325)

* Add a bell curve graph and total points calculation to admin panel statistics
* Closes #608

tests/api/v1/statistics/test_scores.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from CTFd.models import Users
+from tests.helpers import (
+    create_ctfd,
+    destroy_ctfd,
+    login_as_user,
+    register_user,
+    simulate_user_activity,
+)
+
+
+def test_api_statistics_score_distribution():
+    app = create_ctfd()
+    with app.app_context():
+        # Handle zero data case
+        client = login_as_user(app, name="admin", password="password")
+        r = client.get("/api/v1/statistics/scores/distribution")
+        resp = r.get_json()
+        assert resp["data"]["brackets"] == {}
+
+        # Add user data
+        register_user(app)
+        user = Users.query.filter_by(email="user@ctfd.io").first()
+        simulate_user_activity(app.db, user=user)
+
+        # Test again
+        r = client.get("/api/v1/statistics/scores/distribution")
+        resp = r.get_json()
+        assert resp["data"]["brackets"]
+    destroy_ctfd(app)

tests/api/v1/user/test_admin_access.py

@@ -15,6 +15,7 @@ def test_api_hint_404():
         "/api/v1/statistics/users/{}",
         "/api/v1/configs",
         "/api/v1/statistics/challenges/solves/percentages",
+        "/api/v1/statistics/scores/distribution",
         "/api/v1/tags/{}",
         "/api/v1/pages",
         "/api/v1/files/{}",