Add option to easily set maintenance page

ivatar/urls.py

@@ -13,7 +13,6 @@ urlpatterns = [  # pylint: disable=invalid-name
     path('admin/', admin.site.urls),
     path('i18n/', include('django.conf.urls.i18n')),
     url('openid/', include('django_openid_auth.urls')),
-    url('accounts/', include('ivatar.ivataraccount.urls')),
     url('tools/', include('ivatar.tools.urls')),
     url(
         r'avatar/(?P<digest>\w{64})',
@@ -36,7 +35,21 @@ urlpatterns = [  # pylint: disable=invalid-name
     url('privacy/', TemplateView.as_view(template_name='privacy.html'), name='privacy'),
     url('contact/', TemplateView.as_view(template_name='contact.html'), name='contact'),
     path('talk_to_us/', RedirectView.as_view(url='/contact'), name='talk_to_us'),
-    url('', TemplateView.as_view(template_name='home.html'), name='home'),
 ]
 
+MAINTENANCE = False
+try:
+  if settings.MAINTENANCE:
+    MAINTENANCE = True
+except:
+  pass
+
+if MAINTENANCE:
+    urlpatterns.append(url('', TemplateView.as_view(template_name='maintenance.html'), name='home'))
+    urlpatterns.insert(3, url('accounts/', RedirectView.as_view(url='/')))
+else:
+    urlpatterns.append(url('', TemplateView.as_view(template_name='home.html'), name='home'))
+    urlpatterns.insert(3, url('accounts/', include('ivatar.ivataraccount.urls')))
+
+
 urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

templates/maintenance.html

@@ -0,0 +1,30 @@
+{% extends 'base_home.html' %}
+{% load i18n %}
+{% load static %}
+
+{% block title %}{% trans 'federated avatar hosting service' %}{% endblock %}
+
+{% block content %}
+
+<div class="hero">
+  <div class="container">
+    <header>
+      <h1 id='app'>{{ site_name }}</h1>
+      <h2>{% trans 'freeing the web one face at a time' %}</h2>
+    </header>
+  </div>
+</div>
+<section class="content">
+  <div class="container">
+    <div class="text-center">
+      <h2 style="text-transform: capitalize;font-size: 35px;">{% trans 'Maintenance mode' %}</h2>
+	Libravatar is currently in maintenance mode.<br/>
+	Avatars are still served, but all write operations may result
+	in loss of these changes.
+      </p>
+      <hr/>
+    </div>
+  </div>
+</section>
+
+{% endblock %}