Add a display settings pop up dialog with some miscellaneous settings

[Cammymoop]

• Setting to emphasize your own color, which helps when there is a lot of colors on the board
• Setting to show the score as #of_goals/#of_bingos (might be useful for triple bingos and the like)
• Setting to show black text instead of white on selected goals (works ok with the default colors)
• Setting to pick a color theme, I've added a light and dark theme and there's also the standard theme
  All the settings save to localStorage to work across page loads