Minor fixes

-Fixed a glitch that allowed multiple players to be asking questions at once.
-Fixed a glitch causing the mayor to be unable to be set as player White.
-Fixed a glitch causing the wrong person to get voted out.
-Fixed a glitch causing all hidden zones to appear, even ones of players not in the game.
-Added a more fitting background.
-Added the Beholder and Minion roles.
-Made it send players which player(s) were selected.
-Fixed an error that occured when people guessed a Werewolf.
-Fixed a glitch allowing players to change other players' votes.

- Added a rules section to the notebook.
- Made the table more neat and tidy.
- Fixed a glitch where players who sitdown midgame are considered players.