Update 2018-07-05. Disabling chat and changing the authorization system

Update in the authorization system. Now the player under the guest account, passing authorization (logging in through the social network or by email), saves progress. Previously created a new account for an authorized user
Chat button

Chat now disable and enable. It works everywhere in the lobby and in the game. And also the state is saved

SOCIAL NETWORKS

BOOKS
• Bill Robertie 501 - Essential Backgammon Problems