I added the possibility to add toolbar items. This is done by the same
function as the one that adds menubar items, that's why I renamed it to
/beaver_add_item/ instead of /beaver_add_menu_item/. Other API functions
may also need to be changed/renamed, but I don't have time for that
right now.
I added an extra entry to BeaverMenuSection, that is used when you want
to put items on the toolbar. I also added an argument to the
/beaver_add_item /function: depending on that argument, the item will
be a toolbar item or menu item.
Feel free to edit anything, I will be away for a while (fortunately
shorter than last time ^^)