added some more example starting points
removed unused area template
responds to /images and /navigation, but only navigation result makes sense
we can now fetch world-level images
now fetches images for regions below current geohash, after initial fetch, and fits them in as they come in. These related regions are effectively preloading the next level down, so when any region is clicked the initial request is always a cache hit
for sub-geohash image fetches, only add new images
add link to about page
Merge branch 'index-is-whole-world'
add background-wrapper so that when inner background is scaled, then browser does not get scroll bars; not totally perfect as still get small amount of vertical scroll, but that is likely a separate problem. good enough, and a lot better than it was
bump up version
Merge branch 'index-is-whole-world'