I removed references to the following:
on_custom
custom_message
current_message
show_custom_message()
clear_customer_message()
(They were not being used anywhere.) Also, show() does not
receive a msg parameter any more.
(imported from commit 8ec347b40fc9fa582317d68e85c98258cf3fba2f)
Really, the "correct" way to do this is to undo "scrolltheworld", and
then just have a compose div that always lives underneath the message
list div. (This will also allow us to deal much more reasonably with
the whole "Is the composebox in focus" thing.)
In the interest of prototyping something more rapidly, though, we
adopt the somewhat more hackish approach, with the understanding that
much of it will probably be simplified later.
(imported from commit e2754be155c522b6dac28e7b84c62bd2030217c8)
