Made template parser remember last initted page_id and namespace to avoid double init; made additional_headers reassign only do so if $template->additional_headers is empty (it's being blanked somehow, need to come up with a backtrace sometime)

<?php
class Text_Wiki_Render_Plain_Tighten extends Text_Wiki_Render {
    
    
    function token()
    {
        return '';
    }
}
?>