Comment layout: fit into screen

Signed-off-by: Zeljko <zeljko@zwr.fi>
Layout definition

First, I have decided I do not like that App gem, and will
remove it (when taxes settings have been changed) so that
all configs are singleton.

Thus this config includes removal of the old Frong class
and creation of the new simple singleton wich inherits
from a class LayoutDefinition. Right now this only includes
the boxes, but should eventually include **EVERYTHING** needed
to customize a shop.

Code reduction: now we no longer really need all that other
stuff, such as boxes_left/right partials, as it can all be
done nicely in the main layout.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Code reduction: unnecessary div

Oscar, what was the idea of that div? Seems purely redundant.

Signed-off-by: Zeljko <zeljko@zwr.fi>