Bring consistency to templates, update structure to use new base

alchemy/templates/authors.html

@@ -1,14 +1,17 @@
 {% extends "base.html" %}
 
 {% block title %}
-  {{ SITENAME }} — Authors
+Authors {{ super() }}
+{% endblock %}
+
+{% block page_header %}
+Authors
 {% endblock %}
 
 {% block content %}
-  <h1>Authors on {{ SITENAME }}</h1>
-  <ul class="list-unstyled">
-    {% for author, articles in authors|sort %}
-      <li><a href="{{ SITEURL }}/{{ author.url }}">{{ author }}</a> ({{ articles|count }})</li>
-    {% endfor %}
-  </ul>
+<ul class="list-unstyled">
+  {% for author, articles in authors|sort %}
+  <li><a href="{{ SITEURL }}/{{ author.url }}">{{ author }}</a> ({{ articles|count }})</li>
+  {% endfor %}
+</ul>
 {% endblock %}