add display_name function
add guest_player functionality
add current_or_guest_player before_filter
fix spacing
adding guest player
change username to display_name in views
enabling guest_players
remove current_player_games
fix _current_player_games.html.erb
improve game history/player show page
enabling guest player, remove guest renaming functionality
remove set username
add guest welcome message in navbar
remove authenticate_player before filter entirely
fix currentPlayer variable
fix card display for guest players
adjust display for guest users
on leave game, replace player name with 'Empty Seat'
change join and leave actions to use display_name in pusher messages, not username
fix event listeners