more items to buy
Added some new items AND the ability to display new items without killing people's existing games :)
Big refactor pulling the items you bought out of the game service and into a new player service.  Now the only thing that gets persisted is the player service whereas the game service is loaded when you refresh the page.  This way I can make updates and add new buildings, etc without killing people's saves every time, or having the save pulled from local storage writing over what the new buildings are to being with.....