Add images to website "?" info boxes

[blkerby]

For several settings on the generate page and customization page, images could help the player visualize the effect of the settings. These can be incorporated into the info box that displays when clicking on the "?" buttons on the page.

Generate page:

• Doors (show beam doors)
• Quality-of-life:
  • Item markers
  • Room outline revealed on entry
  • Opposite area transitions revealed by map
  • Disableable E-tanks
  • Reserve energy backward transfer

Customization page:

• Room theming
• Door colors
• Screw Attack animation