Second demo

Code used for the second demo. It contains most of the web-app facing endpoints with the notable exception of game updates through sockets.

Major functionality

• /makemove allows making a move on the board
• /gamelist allows getting a list of in progress games
• /joingame allows joining a game
• CORS functionality to allow use as an API
• Getting and creating games works
• Internal game objects and connection to Firebase as a database