Fix style.

biscuit/apps/chronos/views.py

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