Allow map to be embedded by third party websites

[benatwork99]

Ideally provide both 'inline' and 'iframe' style embeds.

• Ensure map function in main site is not affected
• Provide a simple way to embed the map via iframe
• Provide a simple way to build and integrate inline map with third-party site
• Provide instructions on how to embed

[benatwork99]

Fixed in 85c404a855954a018acc43468b7ae80b4d3e21c9