feat: add signup form

kursy/templates/429.html

@@ -0,0 +1,11 @@
+{% extends "allauth/layouts/entrance.html" %}
+{% load allauth %}
+{% block head_title %}
+    Too Many Requests
+{% endblock head_title %}
+{% block content %}
+    {% element h1 %}
+        Too Many Requests
+    {% endelement %}
+    <p>You are sending too many requests.</p>
+{% endblock content %}