Tidy up "status_captiveportal" XHTML

Add SUMMARY to TABLES
Remove PHP ECHO that isn't in a PHP statement
Update HTML Boolean operator
Add COLSPAN to fill the width of the table
Move NOWRAP to CLASS statement
Close INPUT and IMG tags and add ALT to IMG
Add BODY between HEAD.INC and FBEGIN.INC
Remove TYPE from TEXTAREA, invalid in XHTML
Add closing BODY and closing HTML tags