Dust Cleaned Up

Made some various changes in the code.

• Popup feature is removed.
• Applied polling update when no controller is found.
  It means the page won't look for a new controller a thousand times per every second.
• Fixed analog stick movement detection.
  The deadzone option for controlling fade out for sticks were not working.
• Swapped the order of shoulder buttons.
• Changed some button letters to have more consistency in the character width.
• Added background color for stick areas.
• Added customization option for the font and the background color.