Tweak docs template to account for nested pages. Fixes #1280

doc/mytheme/layout.html

@@ -173,20 +173,20 @@
 	<div id="header">
 		<div id="top">
 			<div class="left" id="logo">
-                <h1><a id="title" href="index.html">gevent</a></h1>
+                <h1><a id="title" href="/index.html">gevent</a></h1>
 			</div>
 			<div class="left navigation" id="main-nav">
-				<ul class="tabbed">
+		<ul class="tabbed">
                     <li><a href="http://blog.gevent.org">Blog</a></li>
                     <li><a href="https://github.com/gevent/gevent">Code</a></li>
-                    <li{%- if pagename!='community' and pagename!='sfc' and pagename!='index' %} class="current-tab"{%- endif %}><a href="contents.html">Docs</a></li>
-                    <li><a href="http://pypi.python.org/pypi/gevent#downloads">Download</a></li>
-					<li{%- if pagename=='community' %} class="current-tab"{%- endif %}><a href="community.html">Mailing list</a></li>
+                    <li{%- if pagename!='community' and pagename!='sfc' and pagename!='index' %} class="current-tab"{%- endif %}><a href="/contents.html">Docs</a></li>
+                    <li><a href="https://pypi.org/project/gevent#downloads">Download</a></li>
+                    <li{%- if pagename=='community' %} class="current-tab"{%- endif %}><a href="/community.html">Mailing list</a></li>
                     <li><a href="https://github.com/gevent/gevent/issues">Issues</a></li>
-					<li><a href="http://webchat.freenode.net/?channels=gevent" rel="nofollow">IRC</a></li>
-                    <li{%- if pagename=='sfc' %} class="current-tab"{%- endif %}><a href="sfc.html">Donate</a></li>
+                    <li><a href="http://webchat.freenode.net/?channels=gevent" rel="nofollow">IRC</a></li>
+                    <li{%- if pagename=='sfc' %} class="current-tab"{%- endif %}><a href="/sfc.html">Donate</a></li>
                 </ul>
-				<div class="clearer">&nbsp;</div>
+			<div class="clearer">&nbsp;</div>
 			</div>
 			<div class="clearer">&nbsp;</div>
         </div>
@@ -232,7 +232,7 @@
 
 		<div class="left" id="footer-left">
 
-            <p>version {{theme_gevent_version}} <a href="http://denisbilenko.com" class="quiet-link">&copy; 2009-2015 Denis Bilenko, gevent contributors</a></p>
+            <p>version {{theme_gevent_version}} <a href="http://denisbilenko.com" class="quiet-link">&copy; 2009-2018 Denis Bilenko, gevent contributors</a></p>
 
 			<div class="clearer">&nbsp;</div>
 
@@ -240,8 +240,23 @@
 
 		<div class="right" id="footer-right">
 
-			<p class="large"><a href="http://blog.gevent.org">Blog</a> <span class="text-separator">|</span> <a href="https://github.com/gevent/gevent">Code</a> <span class="text-separator">|</span> <a href="contents.html">Docs</a> <span class="text-separator">|</span> <a href="http://pypi.python.org/pypi/gevent">Download</a> <span class="text-separator">|</span> <a href="community.html">Mailing list</a> <span class="text-separator">|</span> <a href="https://github.com/gevent/gevent/issues">Issue tracker</a> <span class="text-separator">|</span> <a href="http://webchat.freenode.net/?channels=gevent" rel="nofollow">IRC</a> <span class="text-separator">|</span> <a href="#top" class="quiet">Page Top &uarr;</a></p>
-
+                    <p class="large">
+                        <a href="http://blog.gevent.org">Blog</a>
+                        <span class="text-separator">|</span>
+                        <a href="https://github.com/gevent/gevent">Code</a>
+                        <span class="text-separator">|</span>
+                        <a href="/contents.html">Docs</a>
+                        <span class="text-separator">|</span>
+                        <a href="https://pypi.org/project/gevent">Download</a>
+                        <span class="text-separator">|</span>
+                        <a href="/community.html">Mailing list</a>
+                        <span class="text-separator">|</span>
+                        <a href="https://github.com/gevent/gevent/issues">Issue
+                        tracker</a>
+                        <span class="text-separator">|</span>
+                        <a href="http://webchat.freenode.net/?channels=gevent" rel="nofollow">IRC</a>
+                        <span class="text-separator">|</span>
+                        <a href="#top" class="quiet">Page Top &uarr;</a></p>
 		</div>
 
 		<div class="clearer">&nbsp;</div>