Simplify versions handling

_templates/versions.html

@@ -8,8 +8,8 @@
     <div class="rst-other-versions">
       <dl>
         <dt>{{ _('Document Release Versions') }}</dt>
-        {% for version_slug, version_url in versions %}
-          <dd><a href="{{pages_url}}{{version_url}}">{{ version_slug }}</a></dd>
+        {% for version_slug in versions %}
+          <dd><a href="{{pages_url}}/{{version_slug}}">{{ version_slug }}</a></dd>
         {% endfor %}
       </dl>
       <dl>

conf.py

@@ -117,11 +117,7 @@ html_context = {
     "pages_slug": pages_slug,
     "docs_url": docs_url,
     "current_version": version,
-    "versions": (
-        ("latest", "/"),
-        ("0.0", "/0.0/"),
-        ("0.1", "/0.1/")
-    ),
+    "versions": ("latest", "0.0", "0.1")
 }
 
 # -- Options for LaTeX output ---------------------------------------------