Added a copy of Firebug Lite for debugging purposes. License is uncertain but being treated as MPL. (If is is not MPL then it is under something more permissive that permits relicensing anyway)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Firebug</title>
<link rel="stylesheet" type="text/css" href="firebug.css">
</head>
<body>
<div id="toolbar" class="toolbar">
<a href="#" onclick="parent.console.clear()">Clear</a>
<span class="toolbarRight">
<a href="#" onclick="parent.console.close()">Close</a>
</span>
</div>
<div id="log"></div>
<input type="text" id="commandLine">
<script>parent.onFirebugReady(document);</script>
</body>
</html>