[OSM-dev] New map renderer now working in OSM environment

[nick at hogweed.org]

> A couple of things...
>
> The view link isn't updating when the location or zoom changes.

OK, need to work out how to do session variables in Ruby.

> The map should start zoomed out to the whole world, not on Southampton
> or thereabouts :)
> My preference would be for landsat to be enabled by default.

Will do both those once I get the OSM landsat URL from Steve.... implementing 
both these steps will make it rather slow ATM.

Nick