python/docs: use the same links on top as in man pages

I forgot to commit the layout file, because it was gitignored.
Fixed now.

src/python-systemd/docs/.gitignore

@@ -0,0 +1 @@
+!layout.html

src/python-systemd/docs/layout.html

@@ -0,0 +1,17 @@
+{% extends "!layout.html" %}
+
+{% block relbar1 %}
+  <a href="../man/systemd.index.html">Index </a>·
+  <a href="../man/systemd.directives.html">Directives </a>·
+  <a href="index.html">Python </a>·
+  <a href="../libudev/index.html">libudev </a>·
+  <a href="../libudev/index.html">gudev </a>
+  <span style="float:right">systemd v. {{release}}</span>
+  <hr />
+{% endblock %}
+
+{# remove the lower relbar #}
+{% block relbar2 %} {% endblock %}
+
+{# remove the footer #}
+{% block footer %} {% endblock %}