3.0.0a2 dev (#1528)

# 3.0.0a2 / 2020-07-09

**General**

* Accept additional profile fields during registration (affiliation, website, country)
  * This does not add additional inputs. Themes or additional JavaScript can add the form inputs.

**Admin Panel**

* Redesign the challenge creation form to use a radio button with challenge type selection instead of a select input

**API**

* Admins can no longer ban themselves through `PATCH /api/v1/users/[user_id]`

**Themes**

* Spinner centering has been switched from a hard coded margin in CSS to flexbox CSS classes from Bootstrap

**Plugins**

* Revert plugin menu (`register_admin_plugin_menu_bar`, `register_user_page_menu_bar`) changes to 2.x code

**Miscellaneous**

* Fix issue with `Configs.ctf_name` returning incorrect value
* Add prerender step back into challenges.js
* Better handling of missing challenge types. Missing challenge types no longer bring down all other challenges.

tests/api/v1/users/test_users.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from tests.helpers import create_ctfd, destroy_ctfd, login_as_user
+
+
+def test_api_self_ban():
+    """PATCH /api/v1/users/<user_id> should not allow a user to ban themselves"""
+    app = create_ctfd()
+    with app.app_context():
+        with login_as_user(app, name="admin") as client:
+            r = client.patch("/api/v1/users/1", json={"banned": True})
+            resp = r.get_json()
+            assert r.status_code == 400
+            assert resp["success"] == False
+            assert resp["errors"] == {"id": "You cannot ban yourself"}
+    destroy_ctfd(app)