hgweb: fixed IE display problem on changelog page
IE (v6.0) didn't seemed to comply to the 15% width on the
left column of changelog display.
Tested with IE v6.0 and Firefox 1.0.6.
#header#
<title>Mercurial repositories index</title>
</head>
<body>
<h2>Mercurial Repositories</h2>
<table>
<tr>
<td>Name</td>
<td>Description</td>
<td>Contact</td>
<td>Last change</td>
<td> </td>
<tr>
#entries%indexentry#
</table>
#footer#