Correction of table
The cells inside the tr tag should be th's, not td's:
$output = "<table class=\"wikitable contributionscores plainlinks{$sortable}\" >\n".
"<tr class='header'>\n".
"<th>" . wfMsgHtml( 'contributionscores-score' ) . "</th>\n" .
"<th>" . wfMsgHtml( 'contributionscores-pages' ) . "</th>\n" .
"<th>" . wfMsgHtml( 'contributionscores-changes' ) . "</th>\n" .
"<th>" . wfMsgHtml( 'contributionscores-username' ) . "</th>\n";
--Subfader 18:43, 5 June 2011 (UTC)
They are, aren't they?
I did some minor refactoring in Special:Code/MediaWiki/108121.