Use d3 to map future trends

This is a, slightly rough and ready, first cut. Refs #9

Still to do:
    * ensure the map scles well to fit the viewport
    * provide some mouseover styles
    * use a more granular colour scale
Merged topography and region-search
Merge branch 'develop' into topography-region-search. List appended
after map for dev. #21

Conflicts:
	app/scripts/app.js
Merge branch 'develop' of github.com:neontribe/lmi-everywhere into develop