hgweb: support alternate logo url
Clicking on the logo image/text in the hgweb interface brings the
user to the Mercurial project page. The majority of users expect that
this would bring them to the top level index. I have added a new template
variable named `logourl' which allows an administrator to change this
behavior. To stay compatible with existing behavior, `logourl' will
default to http://mercurial.selenic.com/. This change is very useful in
large installations where jumping to the index is common.
{header}
<title>Mercurial repositories index</title>
</head>
<body>
<div class="container">
<div class="menu">
<a href="{logourl}">
<img src="{staticurl}hglogo.png" width=75 height=90 border=0 alt="mercurial" /></a>
</div>
<div class="main">
<h2>Mercurial Repositories</h2>
<table class="bigtable">
<tr>
<th><a href="?sort={sort_name}">Name</a></th>
<th><a href="?sort={sort_description}">Description</a></th>
<th><a href="?sort={sort_contact}">Contact</a></th>
<th><a href="?sort={sort_lastchange}">Last modified</a></th>
<th> </th>
</tr>
{entries%indexentry}
</table>
</div>
</div>
{footer}