hgweb: improve shortlog formatting
shorten author with |person
don't shrink font (default font is presumed to be preferred reading size)
set widths based on font ems rather than page percents.
#header#
<title>Mercurial repositories index</title>
</head>
<body>
<h2>Mercurial Repositories</h2>
The specified repository "#repo|escape#" is unknown, sorry.
Please go back to the main repository list page.
#footer#