Update to Drupal 8.0-dev-2015-11-17. Commits through da81cd220, Tue Nov 17 15:53:49 2015 +0000, Issue #2617224 by Wim Leers: Move around/fix some documentation.

core/themes/stable/templates/layout/maintenance-page.html.twig

@@ -0,0 +1,58 @@
+{#
+/**
+ * @file
+ * Theme override to display a single Drupal page while offline.
+ *
+ * All available variables are mirrored in page.html.twig.
+ * Some may be blank but they are provided for consistency.
+ *
+ * @see template_preprocess_maintenance_page()
+ */
+#}
+<header role="banner">
+  {% if logo %}
+    <a href="{{ front_page }}" title="{{ 'Home'|t }}" rel="home">
+      <img src="{{ logo }}" alt="{{ 'Home'|t }}"/>
+    </a>
+  {% endif %}
+
+  {% if site_name or site_slogan %}
+    {% if site_name %}
+      <h1>
+        <a href="{{ front_page }}" title="{{ 'Home'|t }}" rel="home">{{ site_name }}</a>
+      </h1>
+    {% endif %}
+
+    {% if site_slogan %}
+      <div>{{ site_slogan }}</div>
+    {% endif %}
+  {% endif %}
+</header>
+
+<main role="main">
+  {% if title %}
+    <h1>{{ title }}</h1>
+  {% endif %}
+
+  {{ page.highlighted }}
+
+  {{ page.content }}
+</main>
+
+{% if page.sidebar_first %}
+  <aside role="complementary">
+    {{ page.sidebar_first }}
+  </aside>
+{% endif %}
+
+{% if page.sidebar_second %}
+  <aside role="complementary">
+    {{ page.sidebar_second }}
+  </aside>
+{% endif %}
+
+{% if page.footer %}
+  <footer role="contentinfo">
+    {{ page.footer }}
+  </footer>
+{% endif %}