Pizzas now loaded dynamically

Changed the CSS rules for template, so that it stays invisible. Built
the builder for the pizzas, which was as simple as it has been in the
past. It's a bit more complex because of the whole, vegetarian
element, but it seems well enough abstracted to me. The spacing for
the menu items looks abnormally large to me though, so I may have to
compare and check that out later. Not entirely sure at the moment.