Page only contain it's content

I'm proposing change to current templating: remove some repetitive html layout of page to header and footer.

Some benefit we might get:
- This will minimise html layout issue of 3rd extensions and themes. 
- Reducing unnecessary modificate OpenCart template to develope themes.
- And of course, OpenCart html layout will more easy to maintain.

I manage to make visualisation of my proposal at OpenCart forum (*clean page template section*):
http://forum.opencart.com/viewtopic.php?f=24&t=121086