Visit Us Map - Fallback to static image

[nikdoof]

Fallback to a static image if the browser doesn't support JS, or can't load OpenLayers (retro theme, accessibility).

[nikdoof]

Wonder if we can present a SVG, and render it to JPG for lhs-retro

• Can we export a SVG from OpenLayers/OpenStreetMap?
• Can Hugo convert SVG to JPG?