add changenav at bottom of page
if one reads through the changelog and wants to go to the
previous or next page one needs the navigation links at
the bottom, not at the top of the page
<div>
<a class="title" href="?cmd=changeset;node=#node#;style=gitweb"><span class="age">#date|age# ago</span>#desc|firstline|escape#</a>
</div>
<div class="title_text">
<div class="log_link">
<a href="?cmd=changeset;node=#node#;style=gitweb">changeset</a><br/>
</div>
<i>#author|obfuscate# [#date|rfc822date#] rev #rev#</i><br/>
</div>
<div class="log_body">
#desc|escape|addbreaks#
<br/>
<br/>
</div>