Feature basic database model

-Create Game.java which constructs the game data
-Create PlanningPokerModel.java for storing and loading lists of games
-Create PlanningPokerEntityManager.java for pulling data and interacting with database
-Modify ManagerLayer.java to map Game and import the entity manager for planning poker
-Modify manifest.txt to target the planning poker module
-Added dummy button labeled "Create Session" as swing practice

Collaboration of Robert Edwards and Joshua Allard