Introduce a confirm button

I already had the doughnuts so I didn't need to actually buy any, it just used the ones I already had. Like I said I just happened to hit the Funzo while scrolling through the list and it used my doughnuts to purchase it without asking to confirm. I know with building you can cancel the build and you get you doughnuts back but with characters they just get added to your town without any confirmation.