add login function

billard/templates/registration/login.html

@@ -0,0 +1,16 @@
+{% extends 'billard/base.html' %}
+{% load crispy_forms_tags %}
+
+{% block title %}Login{% endblock %}
+
+{% block content %}
+    <form action="{% url "login" %}" method="post" accept-charset="utf-8">
+        {% csrf_token %}
+        {{ form|crispy }}
+        <input type="hidden" name="next" value="{{ next }}" />
+        <input class="btn btn-default" type="submit" value="Login" />
+
+    </form>
+{% endblock %}
+
+