docs: Get rid of a ton of blocking resources from theme.

docs/_templates/layout.html

@@ -1,9 +1,14 @@
 {% extends "!layout.html" %}
 {% set css_files = css_files + ['_static/style.css'] %}
 
-{% block extrahead %}
+{# We don't support Sphinx search, so don't let its JS either. #}
+{% block scripts %}
+{% endblock %}
+
+{# Alabaster ships a completely useless custom.css, suppress it. #}
+{%- block extrahead %}
     <meta name="google-site-verification" content="oq5hNxRYo25tcfjfs3l6pPxfNgY3JzDYSpskc9q4TYI" />
-    {{ super() }}
+    <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
 {% endblock %}
 
 {% block footer %}
@@ -18,7 +23,13 @@
         g.defer=true; g.async=true; g.src=u+'js'; s.parentNode.insertBefore(g,s);
       })();
     </script>
-    <noscript><p><img src="https://networkgenomics.com/p/tr/ep?idsite=6" style="border:0" alt=""></p></noscript>
+
+    <noscript>
+        <p>
+        {% set fulltitle = (title|striptags|e) + titlesuffix -%}
+        <img src="https://networkgenomics.com/p/tr/ep?idsite=6&action_name={{fulltitle}}" style="border:0" alt="">
+        </p>
+    </noscript>
 
     <script async defer src="https://buttons.github.io/buttons.js"></script>
 {% endblock %}