hgweb: shorten all the URLs in the standard templates
A URL like this:
http://www.selenic.com/hg/?cmd=changeset;node=5010207c35273ac1331cae44c253dd41fa07cb7f
is now presented as:
http://www.selenic.com/hg/?cs=5010207c352
(though the old style still works, of course)
#header#
<title>#repo|escape#: manifest #manifest|short#</title>
</head>
<body>
<div class="buttons">
<a href="?cl=#rev#">changelog</a>
<a href="?tags=">tags</a>
<a href="?cs=#node|short#">changeset</a>
</div>
<h2>manifest for changeset #node|short#: #path#</h2>
<table cellpadding="0" cellspacing="0">
<tr class="parity1">
<td><tt>drwxr-xr-x</tt>
<td><a href="?mf=#manifest|short#;path=#up#">[up]</a>
#dentries%manifestdirentry#
#fentries%manifestfileentry#
</table>
#footer#