Added health columns to player.
Updated player serializer and Ember data model to handle health.
Added progress-bar component.
Updated game ui to display player health bar.
Updated game api end point to process current health.
Moved web socket event trigger from game-ui to game.
Updated player api end point to handle current health.
Fixed premature Math.floor in percent calculation.
Added text shadow to progress ratio.
Moved non persisted methods and properties from level model to controller.
Moved play controller into player/play.
Moved a lot of model logic into controllers.
Fixed exitGame action bug.
Added sprite sheet controller.
Removed proof of concept health decrement on walk.
Added payload method to models.
Updated exitGame to use payload method.
Removed anonymous functions.