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#: tags</title>
</head>
<body>
<div class="buttons">
<a href="?cl=#rev#">changelog</a>
<a href="?mf=#manifest|short#;path=/">manifest</a>
</div>
<h2>tags:</h2>
<ul id="tagEntries">
#entries%tagentry#
</ul>
#footer#