Add initial tt_week.html.

biscuit/apps/chronos/templates/chronos/tt_week.html

+{# -*- engine:django -*- #}
+{% extends "core/base.html" %}
+{% load bootstrap4 %}
+
+{% block page_title %}Timetable{% endblock %}
+
+{% block content %}
+{% endblock %}

biscuit/apps/chronos/views.py

 from django.contrib.auth.decorators import login_required
+from django.shortcuts import redirect, render
 
 from biscuit.core.decorators import admin_required
 
-
 @login_required
 @admin_required
 def timetable(request):
-    pass
+    context = {}
+
+    return render(request, 'chronos/tt_week.html')