Optimize Database Queries for Game State

[BrennanAyers]

With our current long-polling strategy for checking Game state on the Frontend, the number of Queries performed for every call, every 15 seconds, is massive. ActiveRecord needs to pull all public GameCards, their Card information, Player information, and call Player methods to determine cards in hand and topdeck of Discard.
While AR might have some built in caching/optimization, there still can definitely improve these calls.

• Implement real caching: Cache keys will be based on Game.turn number to ensure they're always the current state of the Game
• Short Cache expiration: 30 Minutes or less would ensure that data is not kept around too long, but also allows for people to stop playing for a period of time without the cache repopulating too much