Close BR, INPUT and IMG tags properly

Close BR, INPUT and IMG tags properly, update IMG tags with "alt" and update TABLE tags with "summary".

Remove "sorttable.js", "ticker.js" and the "antiClickJack style" from "fbegin.inc" and place them in "head.inc" (where they belong), this may also help the Widescreen package to work.

Update the javascript and styles in "head.inc" with CDATA sections.

/etc/inc/authgui.inc
/usr/local/www/headjs.php
/usr/local/www/fbegin.inc
/usr/local/www/fend.inc
/usr/local/www/head.inc