Removed gaps between document links in map.html.

This way the mouse is unable to point at the <td> between to table rows. It
teared away my precious tool tip in Chrome. In FF it is always interrupted.
WIP: Changed from relay_geometry to relay_geometries().

I can't really foresee what's happening if I spawn a bunch of
relay_geometry()'s in parallel. There's a small probability that everything
will work correctly and there's the feasible outcome that the staged
FeatureCollection contains wrong _id's, duplicate features etc.