Major tasks undertaken in this patch:
* New format_text argument, overflowdiv.
* New page layout Report.
* Review of all format_text calls.
* Added support for the report layout to all themes.
* Changed forum post display from tables to divs.
This led to a reply post body appearing at the confirmation page. Here,
the variable $message (passed by reference) is used to collect status
messages from various forum processors. It was incorrectly used as a
local variable, too.