Add login/logout functionality

accounts/templates/accounts/login.html

@@ -0,0 +1,17 @@
+{% extends 'front_template.html' %}
+
+{% block body %}
+
+{% if form.errors %}
+<div class="error">Username/password mismatch. Please try again!</div>
+{% endif %}
+
+<form method="post" action="{% url 'accounts:login' %}">
+    {% csrf_token %}
+    {{ form.username.label_tag }} {{ form.username }}<br>
+    {{ form.password.label_tag }} {{ form.password }}<br>
+
+    <button type="submit">Login</button>
+    <input type="hidden" name="next" value="{% url 'booking:list' %}">
+</form>
+{% endblock %}