hgweb: changenav: separate pages before and after the current position
This should allow styles to customize more precisely navigation bar,
for example inserting a cursor to show where we are in the navigation bar.
{header}
<title>{repo|escape}: Changelog</title>
<link rel="alternate" type="application/atom+xml"
href="{url}atom-log" title="Atom feed for {repo|escape}"/>
<link rel="alternate" type="application/rss+xml"
href="{url}rss-log" title="RSS feed for {repo|escape}"/>
</head>
<body>
<div class="page_header">
<a href="http://mercurial.selenic.com/" title="Mercurial" style="float: right;">Mercurial</a><a href="{url}summary{sessionvars%urlparameter}">{repo|escape}</a> / changelog
</div>
<form action="{url}log">
{sessionvars%hiddenformentry}
<div class="search">
<input type="text" name="rev" />
</div>
</form>
<div class="page_nav">
<a href="{url}summary{sessionvars%urlparameter}">summary</a> |
<a href="{url}shortlog/{rev}{sessionvars%urlparameter}">shortlog</a> |
changelog |
<a href="{url}graph{sessionvars%urlparameter}">graph</a> |
<a href="{url}tags{sessionvars%urlparameter}">tags</a> |
<a href="{url}branches{sessionvars%urlparameter}">branches</a> |
<a href="{url}file/{node|short}{sessionvars%urlparameter}">files</a>{archives%archiveentry}
<br/>
{changenav%nav}<br/>
</div>
{entries%changelogentry}
<div class="page_nav">
{changenav%nav}<br/>
</div>
{footer}